• CW DFB Laser Source
• 1585.57 nm on 100 GHz ITU Grid
• Output Power: 20 mW
• Unbeatable Wavelength Stability:<5 pm / 24 hrs
• Extremely Stable Output Power <0.01dB / 24 hrs
• Precise Wavelength Tuning: over ±0.85 nm
• Precise Power Attenuation: over 6 dB, 10 dB typ.
• Versatile Coherence Control
• Variable Coherence Control, Linewidths Adjustable up to 1 GHz
• Stimulated Brillouin Scattering Suppression
• FC/APC Connector

The LS5-L-31D-20-NM Module is a DWDM DFB Laser Source for the TXP platform. This laser source module is designed for a wavelength of 1585.57 nm, on the 100 GHz ITU grid, and provides 20 mW optical power. The optical power can be tuned over 6 dB, and the wavelength over ± 0.85 nm. This light source module has been designed for excellent stability in power and wavelength, providing reliable measurement results for test setups characterizing BER link performance and EDFA parameters. The module features internal modulation capabilities for flexible coherence control, especially the triangular modulation format for efficient suppression of Stimulated Brillouin Scattering in fibers.

A TXP chassis is required for the operation of the LS5-L-31D-20-NM module. The module is hot-pluggable; it can be inserted or removed during the operation of other modules. An intuitive graphical user interface (GUI) for the module is delivered with the TXP chassis, as well as drivers for LabVIEW™, LabWindows/CVI™, MSVC and Borland C.

For more information, please see the DWDM Laser Sources page, which is accessible via the breadcrumb links at the top of this page.

• Wavelength
• Wavelength: 1585.57 nm
• Frequency: 189.08 THz
• Band: L
• Tuning Range: ±0.85 nm
• Accuracy: ±0.025 nm, Typ.< ±0.01 nm
• Stability typ.: <0.005 nm Over 24 hrs
• Resolution: 1 pm
• Laser Linewidth: <10 MHz
• Output Power
• Optical Power: 20 mW
• Accuracy (abs./ rel.): 0.6 dB / 0.4 dB
• Stability (Coherence Control active): <0.002 dB Over 15 s, <0.005 dB Over 60 min, <0.01 dB Over 24 hrs
• Attenuation Range: >6 dB; 10 dB Typ. (Continuously Variable)
• Resolution: 0.01 dB
• Side Mode Suppression Ratio (SMSR): >40 dB Typ. (>36 dB Min) at Max Power
• Relative Intensity Noise (RIN): -145 dB/Hz Typ.
• Optical Isolation: >35 dB
• Coherence Control
• Linewidth: Up to 1 GHz (Adjustable)
• Shape: Sine, Square, and Triangle
• Frequency: 0.02 to up to 20 kHz
• Modulation Depth: 0.1 to 100%
• Modulation
  • Analog LF Modulation: DC to 50 kHz (Option, via SMA Input at the Module)
• General
• Optical Output (Standard): FC/APC
• Fiber: PMF
• Operating Temperature: 0 to 35 °C (non-condensing)
• Storing Temperature: -40 to 60 °C
• Warm-Up Time for Rated Accuracy: 15 min
• Laser Module Width: 1 TXP Slot
• Weight: <0.7 kg
• Laser Safety Class: 1M