FTTX Filter WDM module extensively used in EDFA, Raman amplifiers, WDM networks and fiber optics instrumentation is based on Thin Film Filter (TFF) technology. The device combines or separates light at different wavelengths in a wide wavelength range. It can expand the capacity of a single fiber to achieve bidirectional communication, so that widely used in optical network upgrade and expansion, or introduce new comprehensive business etc.

 

GEZHI Photonics provides filter-based wavelength division multiplexing (WDM) filter devices that are customized to the particular wavelength bands for your special applications. As you might know, GEPON system itself works on 1310/1490, so CATV signal here is delivered over same fiber using 1550nm, and FWDM is a place where all this get's "mixed".

 

 

Type		FWDM
Operating Wavelength T: transmission wavelength R: reflection wavelength 1310±50,1490±10, 1550±10 1610±10, 1625±25, 1650±20	nm	T1550 R1310/1490
		T1490 R1310/1550
		T1310 R1490/1550
		T1550/1610 R1310/1490
		T1550/1625 R1310/1490
		T1625 R1310/1490/1550
		T1650 R1310/1490/1550
Transmission insertion loss	dB	≤0.80
Reflection insertion loss	dB	≤0.60
Transmission channel isolation	dB	≥30
Reflection channel isolation	dB	≥17
PDL	dB	≤0.1
Wavelength thermal stability	nm/	≤0.003
Insertion loss thermal stability	dB/	≤0.005
Directivity	dB	≥55
Return loss	dB	≥45
Operating temperature		-20~+70
Storage temperature		-40~+85

Note: 1. Customization is available.

2. pecified without connector, and add an additional 0.2dB loss per connector.

 

• Pass(Transmission)Channel: 1550nm
• Reflection Channel: 1310nm and 1490nm
• High Isolation, Reliability and channel isolation
• Low Insertion loss and excellent environmental reliability
• RoHS Compliant

 

• Glass Tube Package for 250um bare fiber
• Steel Tube package for 250um bare fiber and 900um fiber
• ABS box for 900um, 2.0mm and 3.0mm fiber
• Note: 250um bare fiber is too finne to be equiped with connector

 

Picture A is for T13/R15, T14/R1315, T1415/R13 FTTX Filter WDM
Picture B is for T15/R13, T13/R1415, T15/R1314, T1314/R15 FTTX Filter WDM