The polarization maintaining fiber coupler is fabricated by a special polarization-maintaining fiber, which can divide the polarized light into two beams of the same polarization state as the input light. The product has passed the GR-1209-CORE and GR-1221-CORE reliability tests and various environmental tests, and product performance is very good, stable and reliable, having been in a number of national key projects in bulk applications.
Performance parameters
|
Parameter |
Unit |
Index |
|
Operating wavelength |
nm |
850、1310、1550 |
|
Structure |
|
1×2/2×2 |
|
Additional loss |
dB |
≤0.80 |
|
Polarization extinction ratio |
dB |
≥20 |
|
Coupling ratio |
% |
5/95 ～ 50/50 |
|
Coupling ratio deviation |
% |
±3 |
|
Return loss |
dB |
≥50 |
|
Directionality |
dB |
≥50 |
|
Pigtail length |
m |
1.0 Or according to customer requirements |
|
Package size |
mm |
Φ3.0×36～42/Φ2.4×36～42 Or customized according to customer requirements |
|
Pigtail specification |
|
125/250μm(Panda) |