Features

Nine Wavelength Combinations Available
300 mW Maximum Power
Fully Bidirectional
Available with Bare Fiber Ends, FC/PC, or FC/APC Connectors (Other Connectors Upon Request)

Wavelength Division Multiplexers (WDMs) are used to combine or separate two different single mode signals. Available in versions capable of combining or separating nine different wavelength combinations (660/1310 nm, 980/1030 nm, 980/1053 nm, 980/1060 nm, 980/1550 nm, 1310/1550 nm, 1480/1550 nm, 1550/1625 nm, or 1600/1960 nm), these multiplexers are an ideal solution for combining pump and signal powers or for combining or separating telecom signals.

Based on the proven Fused Biconic Taper (FBT) technology, these multiplexers provide broad operating wavelengths and low insertion loss. The charts below detail the intended applications for our WDM couplers to aid in the selection of an appropriate WDM. All of our WDM couplers are available with FC/PC and FC/APC connector styles. For custom requests, please contact Technial Support.

OCT Applications

Item #	WD202A2
Operating Wavelength	660/1310 nm
Insertion Loss (Max)	0.5 dB
Isolation (Min)	-

Telecom Applications

Item #	WD202B	WD202C	WD202H
Operating Wavelength	1310/1550 nm	1480/1550 nm	1550/1625 nm
Insertion Loss (Max)	0.5 dB	0.95 dB	0.5 dB
Isolation (Min)	16 dB	10 dB	16 dB

Pump/Source Applications

Item #	WD202F	WD202G	WD202E	WD202A	WD202D
Operating Wavelength	980/1030 nm	980/1053 nm	980/1060 nm	980/1550 nm	1600/1960 nm
Insertion Loss (Max)	0.5 dB	0.5 dB	0.5 dB	0.55 dB	0.80 dB
Isolation (Min)	12 dB	15 dB	15 dB	19 dB	15 dB

Note: All specifications are measured without connectors. Please refer to the Specs tab for complete specifications.

Device Specifications

Item #	WD202A2	WD202F	WD202G	WD202E	WD202A
Operating Wavelength	660/1310 nm	980/1030 nm	980/1053 nm	980/1060 nm	980/1550 nm
Insertion Loss (Max)	0.5 dB	≤0.5 dB	≤0.3 dB	≤0.3 dB	0.55 dB
Isolation (Min)	-	≥12 dB	≥15 dB	≥15 dB	19 dB
PDL*	<0.1 dB	≤0.1 dB	≤0.1 dB	≤0.1 dB	<0.1 dB
Bandwidth	±40.0 nm @ 1310 nm	±5.0 nm	±5.0 nm	±5.0 nm	±10.0 nm
Directivity	-	>50 dB	>50 dB	>50 dB	50 dB
CW Power (Max)	300 mW	300 mW	300 mW	300 mW	300 mW
Operating Temperature	-40 to 85 °C
Storage Temperature	-50 to 85 °C	-40 to 85 °C	-40 to 85 °C		-50 to 85 °C
Package	Ø4 mm x 70 mm	Ø3 mm x 65 mm	Ø3 mm x 65 mm		Ø3 mm x 70 mm

Item #	WD202B	WD202C	WD202H	WD202D
Operating Wavelength	1310/1550 nm	1480/1550 nm	1550/1625 nm	1600/1960 nm
Insertion Loss (Max)	0.5 dB	0.95 dB	≤0.4 dB	0.80 dB
Isolation (Min)	16 dB	10 dB	≥16 dB	15 dB
PDL*	<0.1 dB	<0.3 dB	≤0.1 dB	<0.2 dB
Bandwidth	±20.0 nm	±5.0 nm	±15 nm	±20.0 nm
Directivity	50 dB	50 dB	>50 dB	45 dB
CW Power (Max)	300 mW	300 mW	300 mW	300 mW**
Operating Temperature	-40 to 85 °C			-40 to 75 °C
Storage Temperature	-50 to 85 °C		-40 to 85 °C	-40 to 75 °C
Package	Ø3 mm x 70 mm		Ø3 mm x 65 mm	Ø3 mm x 60 mm

Note: All specifications are measured without connectors.
*Polarization Dependent Loss
**WD202D can be used with higher powers under certain operating conditions. Please contact Technical Support for further details.

Fiber Specifications

Item #	WD202A2	WD202F	WD202A
Fiber Type	Corning SMF-28e	OFS 980	Corning Flexcore 1060
MFD	9.2 ± 0.4 µm @ 1310 nm 10.4 ± 0.5 µm @ 1550 nm	5.0 ± 0.3 µm @ 980 nm	5.9 µm @980 nm 6.2 µm @ 1060 nm
Cladding	125 ± 1.0 µm	125 ± 2 µm	125.0 ± 0.5 µm
Coating	900 µm	245 ± 15 µm	245 ± 10 µm
Attenuation (Max)	0.35 dB/km @ 1310 nm 0.20 dB/km @ 1550 nm	≤3.0 dB/km @ 980 nm	2.1 dB/km @ 980 nm 1.5 dB/km @ 1060 nm
NA	0.14	0.16	0.14
Fiber Length	0.5 m	1 m
Fiber Jacket	Ø900 µm Loose Tube

Item #	WD202B	WD202D
Fiber Type	Corning SMF-28e	SMF-DS
MFD	9.2 ± 0.4 µm @ 1310 nm 10.4 ± 0.5 µm @ 1550 nm	8.10 ± 0.65 µm @ 1550 nm
Cladding	125 ± 1.0 µm	125.0 ± 1.0 µm
Coating	900 µm	245 ± 10 µm
Attenuation (Max)	0.35 dB/km @ 1310 nm 0.20 dB/km @ 1550 nm	0.25 dB/km @ 1550 nm
NA	0.14	0.17
Fiber Length	1 m	2 m
Fiber Jacket	Ø900 µm Loose Tube	Bare Fiber

Note: All specifications are measured without connectors.

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Posted Comments:

Poster: bdada

Posted Date: 2012-01-10 11:28:00.0

Response from Buki at Thorlabs: Thank you for your feedback. We have plans to expand our WDM selecttion. For now, we will contact you to find out more about your requirements in order to quote you a custom WDM coupler.

Poster:

Posted Date: 2012-01-10 07:31:06.0

Dear Thorlab I see that in your list of WDMs there is no S/L band splitters. Is it possible to obtain from you a S/L (1480/1600) WDM, and if not do you know if your provider is able to take a custom order to make it.

Poster: hara

Posted Date: 2011-10-14 19:04:06.0

Please show the transmit efficiency about wavelength, or effective bandwidth.

Poster: Thorlabs

Posted Date: 2010-08-02 17:10:33.0

Response from Javier at Thorlabs to Juergen: Thank you for your feedback. Although we do not have data regarding the coupling efficiency that you can expect from using a 635 or 660 nm laser at one of the inputs and cannot guarantee the performance, we believe that you should be able to couple either one of these wavelengths with enough efficiency for alignment of your setup. I will contact you directly with information regarding an FC/APC version of these WDMs.

Poster: juergen.bosse

Posted Date: 2010-08-01 14:52:01.0

Hi there, I need to couple a visible red laser into my 1550nm optical path for alignment purposes. If I use a WD202A-FC, will I see any output from, say, a 660nm oder 635nm laser? And if so, can I have APC connectors on the 1550 input and output fibers? Thanks in advance!

Poster: Tyler

Posted Date: 2009-03-11 14:09:58.0

A response from Tyler at Thorlabs to armani: Since 1020 nm is well outside of the specified operating range of the multiplexer we do not have data that we can provide on its performance for your application. However, a member of our technical support department will contact you so that we can arrange for you to test the component in your application.

Poster: armani

Posted Date: 2009-03-06 16:42:32.0

I need to separate out two pump/laser signals which are at 980/1020nm. Will the above part be capable of doing this? If not, does Thor sell a part which can?

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