Erbium-Doped Fiber Amplifiers (EDFA)


  • Saturation Output Power of >20 dBm or >24.5 dBm
  • Single Mode or Polarization-Maintaining Output
  • For CW and Ultrafast Pulse Amplification
  • Simple, Turnkey Operation

EDFA300P

Polarization-Maintaining EDFA, >24.5 dBm Output Power

EDFA100S

Single Mode EDFA, >20 dBm Output Power

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 Key System Specificationsa
Item # EDFA100S EDFA100P EDFA300S EDFA300P
Output Powerb (@ 3 dBm Input Power) >20 dBm >24.5 dBm
Small Signal Gain
(@ -20 dBm Input Power)
>30 dB >28 dB >40 dB
Noise Figureb (@ 3 dBm Input Power) <5 dB <6 dB
Polarization Extinction Ratio N/A >25 dB N/A >25 dB
Polarization-Dependent Gain <0.2 dB N/A <0.5 dB N/A
Feature Comparison
Front Panel Pump Current Adjustment
Current Control Mode
Power Control Modec -
Gain Control Modec -
Remote Control Over USB Interface
  • See the Specs tab for details on all available models.
  • Specified at 1550 nm. See the Graphs tab for typical performance graphs.
  • These modes are only accessible through a command-line interface.

Features

  • Operating Wavelength Range: 1530 - 1565 nm (C-Band)
  • Available in Four Models (See Table on the Right)
  • Ideal for Use as a Preamplifier for CW and Ultrafast Applications
  • Front Panel Controls and Remote Control Over USB
  • Custom Dispersion-Compensating Patch Cables are Available Upon Request; Contact Tech Support for Details

Thorlabs' core-pumped erbium-doped fiber amplifiers (EDFAs) provide high small signal gains and output powers in a compact, turnkey benchtop package with FC/APC (2.0 mm narrow key) input and output connectors. Our EDFAs are available in two output powers, >20 dBm or >24.5 dBm, which correspond to the EDFA100x and EDFA300x series amplifiers, respectively. With a <0.06 ps/nm dispersion that minimizes pulse broadening, the EDFA100x amplifiers are designed for femtosecond pulse amplification; see the fs Pulse Amplification tab for more information. The EDFA300x amplifiers, which provide higher output power and higher gain than the EDFA100x devices, are recommended for use as booster amplifiers. For detailed specifications and typical performance graphs, see the Specs and Graphs tabs, respectively.

For additional flexibility, the EDFAs are available in single mode (SM) and polarization-maintaining (PM) models. The EDFA100S and EDFA300S SM amplifiers are polarization-insensitive, and the input and output fibers to the amplifier are standard single-mode fiber (SMF-28-J9). The EDFA100P and EDFA300P PM amplifiers are polarization sensitive, only amplifying light that is linearly polarized along the slow axis. The input and output fibers of the PM amplifiers are polarization maintaining fiber (PM1550-XP) and the connector keys are aligned the slow axis of the fibers.

Operation Modes
The gain and output power of EDFA100x amplifiers is determined by the pump current, which can be varied through the instrument's front panel or remotely via USB 2.0 connector. The EDFA300x amplifiers can operate in three modes, including current, power, or gain control modes. Current control is available via the instrument front panel or remotely via USB, while power and gain adjustment modes are only available through a command-line interface. 

For applications that require EDFAs with custom form factors, power consumption, or optical specifications, please contact Tech Support. Thorlabs also offers Ytterbium-Doped Fiber Amplifiers (YDFAs) and a Praseodymium-Doped Fiber Amplifier (PDFA), which operate in the 1025 - 1075 nm and 1280 - 1330 nm (O-band) wavelength ranges, respectively.

Unless otherwise indicated, all specifications below are valid for CW inputs only.

Item # EDFA100S EDFA100P
Amplifier Specifications (@ 1000 mA Pump Current)
Operating Wavelength Rangea 1530 - 1565 nm
Output Powerb,c (@ 3 dBm Input Power) >20 dBm
Small Signal Gainb (@ -20 dBm Input Power) >30 dB >28 dB
Noise Figureb (@ 3 dBm Input Power) <5 dB
Output Power Stability (@ 3 dBm Input Power)
<±2% Over 24 Hours
(After 15 Minute Warm-Up,
for Ambient Temperature ±2 °C)
Total Dispersion Within Amplifierd <0.06 ps/nm
Laser Class 3B
Fiber Specifications
Output Polarization Random Linear, Aligned to Slow Axis
Polarization Extinction Ratio N/A >25 dB
Polarization-Dependent Gain <0.2 dB N/A
Return Loss at Input Port >50 dB
Input / Output Isolation >30 dB
Input / Output Fiber Type SMF-28-J9 PM1550-XP
Input / Output Fiber Connectors FC/APC Compatible,
2.0 mm Narrow Key
  • The wavelength range over which the output power (at 3 dBm input power) does not fall below 18 dBm.
  • Specified at 1550 nm. See the Graphs tab for typical curves showing the variation of each parameter over a range of wavelengths and input powers.
  • See the Graphs tab for plots showing how the output power scales with the input power.
  • Amplifier dispersion can be minimized using a dispersion-compensating fiber patch cable. Patch cables with custom dispersion compensation are possible by contacting Tech Support.
Absolute Maximum Ratings
Absolute Maximum Input Power 10 dBm
Absolute Maximum Output Power 23 dBm
Operating Temperature 15 to 35 °C
Storage Temperature 0 to 50 °C

 

General Specifications
Input Voltage 100 - 240 VAC, 50 - 60 Hz
Input Power 20 VA (Max)
Fuse Rating 500 mA
Fuse Type IEC60127-2/III (250 VA, Slow Blow Type "T")
Dimensions (W x H x D) 5.76" x 3.06" x 12.16"
(146.3 mm x 77.7 mm x 308.9 mm)
Weight 2.08 kg (4.58 lbs)
Connections and Controls
Interface Control Optical Encoder with Push Button
Enable Select Keypad Switch Enable with LED Indicator
Power On Key Switch
Fiber Connectors FC/APC Compatible, 2.0 mm Narrow Key
Input Power Connector IEC Connector
Interlock 2.5 mm Mono Jack
Communications
Communications Port USB 2.0 Compatible
COM Connection USB Type B Connector
Required Cable USB Type A to Type B Cable
(Replacement Item # USB-A-79)

Unless otherwise indicated, all specifications below are valid for CW inputs only.

Item # EDFA300S EDFA300P
Amplifier Specifications (@ 100% Pump Current Set-Point)
Operating Wavelength Rangea 1530 - 1565 nm
Saturated Output Powerb,c >24.5 dBm
Small Signal Gainb (@ -20 dBm Input Power) >40 dB
Noise Figureb (@ 3 dBm Input Power) <6 dB
Output Power Stabilityd (Constant Current Model @ 3 dBm Input Power) <±2% Over 24 Hours
Output Power Stabilityd (Constant Power Model @ 3 dBm Input Power) <±0.5% Over 24 Hours
Total Dispersion Within Amplifiere <0.14 ps/nm
Laser Class 3B
Fiber Specifications
Output Polarization Random Linear, Aligned to Slow Axis
Polarization Extinction Ratio N/A >25 dB
Polarization-Dependent Gain <0.5 dB N/A
Return Loss at Input Port >50 dB
Input / Output Isolation >30 dB
Input / Output Fiber Type SMF-28-J9 PM1550-XP
Input / Output Fiber Connectors FC/APC Compatible,
2.0 mm Narrow Key
  • The wavelength range over which the small signal gain (at -20 dBm input power) does not fall below 35 dB.
  • Specified at 1550 nm. See the Graphs tab for typical curves showing the variation of each parameter over a range of wavelengths and input powers.
  • See the Graphs tab for plots showing how the output power scales with the input power.
  • After a 15 minute warm-up time, for ambient temperature temperature fluctuations ±2 °C.
  • Amplifier dispersion can be minimized using a dispersion-compensating fiber patch cable. For patch cables with custom dispersion compensation, please contact Tech Support.
Absolute Maximum Ratings
Absolute Maximum Input Power 13 dBm
Absolute Maximum Output Power 26 dBm
Operating Temperature 15 to 35 °C
Storage Temperature -10 to 40 °C

 

General Specifications
Input Voltage 100 - 240 VAC, 50 - 60 Hz
Input Power 20 W (Max)
Fuse Rating 2 A, 250 V
Fuse Type Time-Lag (Slow-Blow)
Fuse Size 5 mm x 20 mm
Dimensions (W x H x D) 250.0 mm x 300.0 mm x 122.2 mm
(9.84" x 11.81" x 4.81")
Weight 3.4 kg (7.5 lbs)

Performance Graphs

All EDFA100x performance graphs are representative of both the EDFA100S and EDFA100P devices, and were obtained using a CW input, the maximum pump current of 1000 mA, and the factory pump temperature setting of 25 °C unless otherwise stated. EDFA300x performance graphs are taken with the pump level set to 100% and are representative of both the EDFA300S and EDFA300P devices. Note that this data reflects the typical performance of our EDFAs, and is presented for reference only. The guaranteed specifications for all models are shown in the Specs tab.


Output Power Scaling

EDFA100x Output Power vs. Input Power
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Click for Raw Data
Typical EDFA100x Output Power as a Function of Input Power
Output Power vs. Pump Current
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Click for Raw Data
Typical EDFA100x Output Power at 1550 nm as a Function of
Pump Current
EDFA300x Output Power vs. Input Power
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Click for Raw Data
Typical EDFA300x Output Power as a Function of Input Power
EDFA300x Output Power vs. Pump Level
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Click for Raw Data
Typical EDFA300x Output Power at 1550 nm as a Function of
Pump Level

Gain

EDFA100x Gain
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The typical EDFA100x gain as a function of the wavelength. The blue-shaded region denotes the specified operating wavelength range.
EDFA300x Gain
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The typical EDFA300x gain as a function of the wavelength. The blue-shaded region denotes the specified operating wavelength range.

Noise Figure

EDFA100x Noise Figure
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The typical EDFA100x noise figure as a function of the wavelength. The blue-shaded region denotes the specified operating wavelength range.
EDFA300x Noise Figure
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Click for Raw Data
The typical EDFA300x noise figure as a function of the wavelength. The blue-shaded region denotes the specified operating wavelength range.

Femtosecond Pulse Amplification with the EDFA100x Amplifiers

Compared to booster optical amplifiers (BOAs) and semiconductor optical amplifiers (SOAs), erbium-doped fiber amplifiers (EDFAs) can amplify femtosecond pulses to significantly higher peak power levels. Details on the amplification mechanisms involved are provided in the Amplifier Comparison section at the bottom of this tab.

Below, we present measurements that show how the temporal profile of a 430 fs FWHM input pulse at 1550 nm is affected by propagation through the EDFA100P amplifier.

Experimental Setup
Femtosecond laser pulses centered at 1550 nm were emitted by an erbium fiber oscillator. The 3 dB spectral bandwidth of these pulses was measured to be 9 nm, corresponding to a transform-limited pulse width of 290 fs FWHM; the actual pulse width was measured by an intensity autocorrelator as 430 fs FWHM. The average output power of the fiber oscillator was 1.1 mW. Since the repetition rate of the fiber oscillator was 50 MHz, the measured pulse energy was 22 pJ.

These 430 fs FWHM, 22 pJ pulses were propagated into the EDFA100P amplifier. In some cases, the fiber oscillator was connected directly to the amplifier, while in others, the fiber oscillator was connected to the amplifier through an intermediary dispersion-compensating fiber patch cable. The total output power was varied by adjusting the EDFA100P pump current. We measured the temporal profile of the amplified output pulses as a function of the output power using an intensity autocorrelator.

Results
We characterized the amplified output pulses at three output pulse energies: 0.3 nJ, 0.6 nJ, and 1.1 nJ. The measurements were stopped at 1.1 nJ output pulse energy because nonlinearities appeared in the temporal profile. The data in each graph has been normalized to make the shapes of the autocorrelations easier to compare.

0.3 nJ Pulse Energy
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When the amplifier was set to 0.3 nJ output pulse energy, we observed minimal distortion to the temporal profile of the output pulse. The use of a dispersion-compensating fiber (DCF) compressed the output pulse to 150 fs.

0.3 nJ Test Measured Pulse Width (FWHM) Calculated Peak Power
Input Pulse 430 fs 45 W
Output Pulse
(No DCF
Precompensation)
570 fs 0.46 kW
Output Pulse
(-0.05 ps/nm DCF
Precompensation)
150 fs 1.76 kW

0.6 nJ Pulse Energy
Click to Enlarge
When the amplifier output pulse energy was doubled to 0.6 nJ, there was still minimal distortion to the non-precompensated output pulse. By applying precompensation, the output pulse was compressed to 88 fs, but pedestals associated with nonlinearities appeared on the sides. The peak output power in the precompensated case was 6 kW.

0.6 nJ Test Measured Pulse
Width (FWHM)
Calculated
Peak Power
Input Pulse 430 fs 45 W
Output Pulse
(No DCF
Precompensation)
480 fs 1.1 kW
Output Pulse
(-0.05 ps/nm DCF
Precompensation)
88 fs 6 kW

1.1 nJ Pulse Energy
Click to Enlarge
When the output pulse energy was doubled again to 1.1 nJ, significant distortions appeared in the non-precompensated pulse. Our previous -0.05 ps/nm DCF precompensation led to strong pedestals on the sides. A larger DCF precompensation of -0.14 ps/nm nearly removed the nonlinearities, but the output pulse broadened to 970 fs.

1.1 nJ Test Measured Pulse Width (FWHM) Calculated Peak Power
Input Pulse 430 fs 45 W
Output Pulse
(No DCF
Precompensation)
140 fsa -
Output Pulse
(-0.05 ps/nm DCF
Precompensation)
80 fsa -
Output Pulse
(-0.14 ps/nm DCF
Precompensation)
970 fs 1 kW
  • Obtained by Fitting a sech2 Curve to the Center of the Main Peak

Conclusion
When the peak power of the output pulse is ~1 kW or lower, nonlinearities in the temporal profile of the output pulse are minimal. (This peak power limit corresponds to a B integral between 1 and 2, below the limit at which nonlinear optical effects can become significant.) As the peak power increases beyond ~1 kW, spectral broadening due to self-phase modulation and other nonlinear optical effects compresses the pulse width and distorts the temporal profile. A careful balance between the initial chirp on the pulse, the amplifier dispersion, and the pulse energy can produce nonlinearly compressed pulses with low distortion.

An example of this is shown in the 0.6 nJ case above. When used with a femtosecond erbium oscillator and a precompensating fiber, the EDFA100P amplifier is capable of producing <100 fs pulses that have peak power of 6 kW. Without a precompensating fiber, the amplifier still provides high gain and minimal temporal distortion by keeping the peak power of the output pulse (and the B integral) below the threshold for nonlinearity.

 

Amplifier Comparison

Fiber amplifiers such as EDFAs and YDFAs are typically better suited than semiconductor optical amplifiers (e.g., BOAs and SOAs) for amplifying femtosecond laser pulses. These amplifier types differ in their saturation energies, their gain saturation dynamics, and their free carrier lifetimes. In semiconductor amplifiers, the saturation energies are relatively low, on the order of a few picojoules. This limits the amplified pulse energy that can be achieved by semiconductor amplifiers. By way of comparison, in fiber amplifiers, the saturation energies exceed microjoule levels. Additionally, the gain recovery times in semiconductor amplifiers are governed by the carrier lifetime, which is in the 10 ps to 100 ps timescale. The carrier lifetime of fiber amplifiers is typically in the 10 µs to 1 ms timescale.

Consider the case of a mode-locked femtosecond laser with a repetition rate on the order of 1 MHz. For pulse energies well below the saturation energy of the semiconductor amplifiers, the pulses will be amplified with minimal distortion. However, once the pulse energy exceeds the saturation energy, the amplification will saturate during the pulse, leading to a gain difference over the pulse's temporal profile and distorting the pulse shape. Since fiber amplifiers have higher saturation energies than semiconductor amplifiers, they are less prone to experience gain saturation by this mechanism.

Because the gain recovery time of a semiconductor amplifier (10 ps to 100 ps timescale) is shorter than the repetition period, the gain medium recovers before the next pulse in the pulse train arrives at the semiconductor amplifier. Therefore the same process is repeated for each pulse. In fiber amplifiers, the free carrier lifetime (10 µs to 1 ms timescale) is much longer than the repetition period. Consequently, fiber amplifiers can be thought of as responding to the pulse's average power, as opposed to its peak power.

An additional point that is especially relevant to femtosecond pulses is the role of nonlinear processes in the amplifier. While the nonlinear response of a fiber amplifier is almost instantaneous, the nonlinear response time of a semiconductor amplifier is in the 10 ps to 100 ps timescale, as it is related to its carrier lifetime. This ps timescale represents another source of pulse distortions when the pulse energy exceeds the saturation energy.

EDFA100x Drivers

Version 2.12.18

Includes drivers required to control our EDFA100x fiber amplifiers in a Windows® environment.

Software Download

EDFA100x Front and Back Panels

EDFA100x Front Panel
Click to Enlarge

Front Panel
Back Panel
Callout Description
1 AC Power Cord Connector
2 Fuse Tray
3 Remote Interlock
4 USB Port for Remote Interface
5 Cooling Fan (Do Not Block)
Front Panel
Callout Description
1 Control Knob to Adjust Pump Laser Current and Temperature
2 Display to Show Pump Laser Temperature and Drive Current
3 Optical Input for Single Mode FC/APC Fiber Connector
4 Optical Output for Single Mode FC/APC Fiber Connector
5 Amplifier Emission Indicator
6 Amplifier Enable Switch
7 Key Switch for Power

EDFA300x Front and Back Panels

EDFA300x Front Panel
Click to Enlarge

Front Panel
Back Panel
Callout Description
1 USB Port for Diagnostics and Remote Interface
2 AC Power Cord Connector
3 Fuse Tray
4 AC Power Switch
5 Remote Interlock Input (BNC)
6 Cooling Fan (Do Not Block)
Front Panel
Callout Description
1 Key Switch for Power
2 Display to Show Pump Level, Temperature Status, and Emission Status
3 Control Knob to Adjust Pump Laser Current
4 Amplifier Enable Switch and Emission Indicator
5 Optical Output for Single Mode FC/APC Fiber Connector
6 Optical Input for Single Mode FC/APC Fiber Connector

Shipping List

Included with Item #s EDFA100S and EDFA100P:

  • Erbium-Doped Fiber Amplifier in Benchtop Package
  • Amplifier Enable Key (Qty. 2)
  • Interlock-Shorting Pin
  • FBC250 Bulkhead and Connector Cleaner
  • Region-Specific Power Cord
  • Printed Manual

Included with Item #s EDFA300S and EDFA300P:

  • Erbium-Doped Fiber Amplifier in Benchtop Package
  • Interlock-Shorting BNC Connector
  • Region-Specific Power Cord
  • FBC250 Bulkhead and Connector Cleaner
  • 1 m Patch Cable with FC/APC Connectors (for Connection to the Output Port)
  • Sacrificial Fiber Interface (for Connection to the Output Port)*

*If the sacrifical interface becomes damaged, replacements are available by contacting Tech Support.


Posted Comments:
Nicolas Forget  (posted 2019-10-28 17:09:49.317)
Hi, I would like to know whether the EDFA100P can be used both ways, ie with light coming in from both the input and output ports. Best regards, Nicolas
YLohia  (posted 2019-10-29 11:10:36.0)
Hello Nicolas, the EDFA is not bidirectional -- the input must be supplied via the "Input Port". If you require a bidirectional operation, then our semiconductor optical amplifiers such as the SOA1117P would be a better fit. The SOA is built with a symmetric structure, so when operating in the reverse direction, the gain will stay the same but saturation power and noise figure may be different.
Tiong Leh (Johnny) Yap  (posted 2019-10-16 18:17:04.947)
Hi, I would like to ask for quotation for EDFA100S. Thank you. Regards, Johnny
YLohia  (posted 2019-10-16 10:51:11.0)
Hello Johnny, thank you for contacting Thorlabs. Quotes can be requested by emailing our Sales Team at sales@thorlabs.com or selecting "Request Quote" from your cart.
Yohan Barbarin  (posted 2019-10-08 03:07:20.72)
Dear, We have an issue with the interlock. It looks like it is only mecanical and not electronical. Could you please give us more information about the electrical specs of the interlock input. Best regards, Yohan
YLohia  (posted 2019-10-08 02:33:52.0)
Hello Yohan, thank you for contacting Thorlabs. The electrical specs for the interlock can be found on Page 10 of the manual: https://www.thorlabs.com/_sd.cfm?fileName=TTN118382-D02.pdf&partNumber=EDFA100S
user  (posted 2019-09-04 08:30:52.267)
Please can you provide advice on the lowest input power to use with the EDFA100S ? For example, do you have a graph to show how the SNR in the output varies as a function of the input power ? The wavelength I want to use is 1550 nm. I would like to consider input powers down to - 40 dBm, maybe even lower. I notice your graph stops at minus 30 dBm. Thank you
asundararaj  (posted 2019-09-12 01:39:32.0)
Thank you for your feedback. The EDFA100S can be seeded with -40 dBm input power. However, the SNR of the output will be reduced as input power is increased. I have contacted you directly to discuss this further.
cees de Kok  (posted 2019-03-13 03:54:32.757)
We are considering the purchase of the EDFA100P. We are also working at wavelength on or a little bit below 1520 nm. The gain curve in the documentation which goes as low as 1525 nm seems to still not go down very steeply below 1525... So my question is: do you have gain-data for 1520 nm or even lower?
llamb  (posted 2019-03-15 08:29:36.0)
Hello, thank you for your feedback. I have emailed you directly with additional data.
k.l.perrier  (posted 2019-03-06 11:08:13.807)
We are interested in the Gain and Noise spectrum below 1525nm. Is it possible to provide us the graphs from 1490nm-1570nm or similar range? Thank you
llamb  (posted 2019-03-15 08:23:53.0)
Thank you for contacting Thorlabs. I have reached out to you directly with further data.

EDFA, >20 dBm Max Output Power

EDFA100x Output Power vs. Input Power
Click to Enlarge

This plot gives the wavelength-dependent output power as a function of input power for our EDFA100x units. Data was taken using a CW input, the maximum pump current of 1000 mA, and the factory pump temperature setting of 25 °C. A complete set of performance graphs is available on the Graphs tab.
  • Ideal for Use as a Preamplifier for Input Signal Powers ≥ -30 dBm
  • <0.06 ps/nm Dispersion Within Amplifier to Minimize Pulse Broadening
  • Provides Minimal Nonlinearity for Ultrafast Applications
  • Constant Current Mode Operation
  • Suitable for CW and Pulsed Signals

Thorlabs' EDFA100x core-pumped erbium-doped fiber amplifiers (EDFAs) offer >20 dBm output power with a low noise figure of <5 dB. The EDFA100S is a single mode EDFA with minimal sensitivity to the input light polarization, while the EFDA100P is a polarization-maintaining EDFA that only amplifies light polarized along the slow axis of the fiber. Each EDFA100x includes built-in input and output isolators. In order to support applications involving femtosecond pulses, they are engineered to impart minimal dispersion. The fs Pulse Amplification tab contains more details on femtosecond operation. If additional dispersion compensation is needed at the input or output, dispersion-compensating patch cables are available from stock or patch cables with custom dispersion compensation are available from Tech Support.

The pump current of the EDFA100x amplifier is adjustable through the instrument's front panel, allowing the user to vary the gain and output power of the amplifier (see the Front & Back Panels tab). In addition, remote control of the pump current is supported by sending serial commands via a USB 2.0 connector; drivers are available on the Software tab. For added safety, the user may connect an interlock circuit to the 2.5 mm mono jack on the rear panel.

Each EDFA100x uses a universal power supply allowing operation over 100 - 240 VAC, 50 - 60 Hz without the need to select the line voltage. A region-specific power cord is included. For a full list of items shipped with each EDFA100x, please see the Shipping List tab.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
EDFA100S Support Documentation
EDFA100SErbium-Doped Fiber Amplifier, >20 dBm, Single Mode
$4,349.69
Lead Time
EDFA100P Support Documentation
EDFA100PErbium-Doped Fiber Amplifier, >20 dBm, Polarization Maintaining
$5,129.40
Today

EDFA, >24.5 dBm Max Output Power

EDFA300x Output Power vs. Input Power
Click to Enlarge

This plot gives the wavelength-dependent output power as a function of input power for our EDFA300x units. Data was taken with the pump level set to 100%. A complete set of performance graphs is available on the Graphs tab.
  • Ideal for Use as a:
    • Preamplifier for Signal Powers ≥ -20 dBm
    • Booster Between a Preamplifier and a Power-Amplifier Stage
  • Constant Current, Power, and Gain Operation Modes
  • Suitable for CW and Pulsed Signals

Thorlabs' EDFA300x core-pumped erbium-doped fiber amplifiers (EDFAs) offer >24.5 dBm output power with a low noise figure of <6 dB. The EDFA300S is a single mode EDFA with minimal sensitivity to the input light polarization, while the EFDA300P is a polarization-maintaining EDFA that only amplifies input light polarized along the slow axis of the fiber. Each EDFA300x instrument includes built-in input and output isolators to protect the input laser source from any amplified spontaneous emission or back reflections, as well as to prevent the pump light from exiting the amplifier. If additional dispersion compensation is needed at the input or output, dispersion-compensating patch cables are available from stock or patch cables with custom dispersion compensation are available from Tech Support.

Each unit includes a 1 m FC/APC patch cable, and this cable should be connected to the output at all times to protect the output receptacle from the optical damange caused by repeated connections. A sacrificial optical interface compatible with FC/APC connectors is also supplied with each unit, which can be plugged into the output port of the amplifier, and all fiber cable connections can be made to this interface. Note that this option will introduce approximately 0.7 dB of extra insertion loss, but it offers the advantage of preventing direct contact between a fiber cable and the internal connector surface. For a full list of items shipped with each EDFA300x, please see the Shipping List tab.

Operation Modes
The EDFA300x devices can be operated in three modes, including automatic current control (ACC), automatic power control (APC), and automatic gain control (AGC). ACC mode drives the pump current in the EDFA at a fixed level and is accessible through the instrument’s front panel. The user can vary the gain and output power level of the instrument by adjusting the pump current level. These fiber amplifiers can also be operated in APC or AGC mode, which maintain fixed output power or fixed gain, respectively. Note that these two operation modes are only accessible through a command-line interface; the EDFA300x device can be connected to a PC via the USB port on the back panel of the instrument; see the Front & Back Panels tab for details.

The command line interface can also be used to enable or disable the amplifier, set the current level in the ACC mode, or read status indicators. The indicators available through the USB interface include temperature error, interlock status, and emission status. For more details on these features, please refer to the instrument manual.

Each EDFA uses a universal power supply allowing operation over 100 - 240 VAC, 50 - 60 Hz without the need to select the line voltage. A region-specific power cord is included.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
EDFA300S Support Documentation
EDFA300SNEW!Erbium-Doped Fiber Amplifier, >24.5 dBm, Single Mode
$7,800.00
Lead Time
EDFA300P Support Documentation
EDFA300PNEW!Erbium-Doped Fiber Amplifier, >24.5 dBm, Polarization Maintaining
$8,300.00
Lead Time