SFW-C Coarse Wavelength Division Multiplexer (CWDM)

Couplers, Splitters Wavelength division multiplexers (WDM, CWDM, DWDM)

SFW-C series Coarse Wavelength Division Multiplexer and Demultiplexer (CWDM) modules are reliable, cost effective solutions to multiservice applications. They multiply the capacity of existing singlemode fibers, by combining up to 18 ITU-T G.694.2 compatible (20 nm) channels in metropolitan, access and enterprise networks and for Cable TV applications. They are a low cost approach for systems that use uncooled laser sources, and are an alternative to more expensive DWDM components based on 100 GHz or 200 GHz channel spacing.

High port isolation
Custom defined specifications
Low insertion loss
Low polarization dependent loss
Transmission with high directivity
Wide spectral channels
Environmentally stable
Wide range of packaging types – min. bend radius protection

Feature	Specification	Feature	Specification
Channel spacing	20 nm	PDL	≤ 0.1 dB
Pass bandwidth	Typ. 14 nm	Max. optical power	300 mW
Pass band flatness	0.3 dB	Operating temperature (Conditioned by the cable type)	-10 to +70 °C
Min Isolation	≥ 40 dB non-adjacent channel ≥ 30 dB adjacent channel	Storage temperature (Conditioned by the cable type)	-40 to +85 °C
Return loss	≥ 50 dB	Package dimensions	Refer to ord. code
Directivity	≥ 50 dB

Insertion loss (dB)* (without connectors)

4 Channels		CWDM 4 + E		CWDM 6 CH		CWDM 6 + E		CWDM 8 CH		CWDM 8 + E		CWDM 16 + E
Typ.	M+D	Typ.	M+D	Typ.	M+D	Typ.	M+D	Typ.	M+D	Typ.	M+D	Typ.	M+D
1.5	2.5	1.7	3.0	2.1	3.7	2.3	4.1	2.5	4.5	2.7	4.9	4.8	8.8

Compact CWDM (Low Loss) (without connectors)

Channel Number	4	8	8 (+E1)	8 (+E2)
Insertion Loss (dB)	1.0	1.5	1.5	1.5
Maximum Ripple in Passband (dB)	0.5
Maximum Polarization Depend Loss (dB)	≤0,2
Maximum Polarization Mode Dispersion (ps)	0,10(GD)
Maximum Power Handling (mW)	500