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● Description:
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. ALTEK 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".
● Feature:
► Wide Wavelength Range;
► Low Insertion Loss;
► High Channel Isolation;
► High stability and reliability.
● Applications:
► System Monitoring;
► Transmitters and Fiber;
► Fiber optical amplifier.
● Performance Specification:
| Type |
|
FWDM |
Operating Wavelength |
nm |
T1550 R1310/1490 |
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 |
℃ |
-40 ~ +85 |
● Item Details:
Pass(Transmission)Channel: 1310nm
Reflection Channel: 1490nm and 1550nm
High Isolation, Reliability and channel isolation
Low Insertion loss and excellent environmental reliability
RoHS Compliant
● Package Variants:
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 fine to be equipped with connector
● Mechanical Drawing:
● Application:
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