WDM Fiber Coupler Description:
WDM Fiber Coupler is using optical multiplexer to different wavelengths of light to reuse the signals to single fiber transmission, the receiving end of the link, with the aid of photolysis multiplexer to mixed signal in the optical fiber signal is decomposed into different wavelengths, connected to the corresponding receiving equipment.
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.
SUNET 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”.
2. Features:
Low Insertion Loss
High Isolation
Low PDL
Compact Design
Good Channel-to-channel Uniformity
Wide Operating Wavelength:1260nm~1620nm or 1460nm~1620nm
Wide Operating Temperature:-5℃~75℃
High Reliability and Stability
3.Applications of WDM Fiber Coupler:
CWDM System
PON Networks
CATV Links
4.Compliance:
Telcordia GR-1209-CORE-2001
Telcordia GR-1221-CORE-1999
ITU-T G.694.1
RoHS
Specifications of WDM Fiber Coupler:
| Parameter | 4 Channel | 8 Channel | 16 Channel | ||||
| Mux | DEMUX | Mux | DEMUX | Mux | DEMUX | ||
| Channel Wavelength(nm) | 1270~1610 | ||||||
| Center wavelength Accuracy(nm) | ±0.5 | ||||||
| Channel Spacing(nm) | 20 | ||||||
| Channel Pass band(@-0.5dB bandwidth (nm) | >14 | ||||||
| Insertion Loss(dB) | ≤1.4 | ≤2.6 | ≤5.0 | ||||
| Channel Uniformity (dB) | ≤0.5 | ≤0.5 | ≤0.5 | ||||
| Channel Ripple (dB) | 0.3 | ||||||
| Isolation (dB) | Adjacent | N/A | >30 | N/A | >30 | N/A | >30 |
| Non-adjacent | N/A | >40 | N/A | >40 | N/A | >40 | |
| Insertion Loss Temperature Sensitivity (dB/℃) | <0.005 | ||||||
| Wavelength Temperature Shifting (nm/℃) | <0.002 | ||||||
| Polarization Dependent Loss (dB) | <0.1 | ||||||
| Polarization Mode Dispersion (PS) | <0.1 | ||||||
| Directivity (dB) | >50 | ||||||
| Return Loss(dB) | >45 | ||||||
| Maximum Power Handling(MW) | 500 | ||||||
| Operating Temperature(℃) | -5~+75 | ||||||
| Storage Temperature (℃) | -40~85 | ||||||
| Package dimension(mm) | 1. L100 x W80 x H10 ( 2 CH~8CH Module) | ||||||
