1x3(1x4) Monolithic Single Mode Coupler is fused by 3 or 4 fibers under heat at the same time. Keep only 1 input fiber and 3 or 4 output fibers as per demands. For 1x3 Monolithic Coupler, the shortest steel tube Unifiber can build is 30mm to cater to customers’ special requirements.
Features
Low excess loss
Low PDL
1×4 WBC | 1×4 DWC | 1×4 TWC | ||||||
1×4 SSC | ||||||||
Operating wavelength (nm) | 1310 or 1550,others on request | 1310 and 1550 | 1310,1490 and 1550 | |||||
Operating bandwidth (nm) | ±15 | ±40 | ±40 | 1310±40,1490±10,1550±40 | ||||
Port configuration | 1×4 | |||||||
Grade | P | A | P | A | P | A | P | A |
Typical excess loss (dB) | 0.15 | 0.25 | 0.2 | 0.3 | 0.3 | 0.4 | 0.3 | 0.4 |
Insertion Loss (dB) | ≤7.0 | ≤7.4 | ≤7.1 | ≤7.4 | ≤7.2 | ≤7.5 | ≤7.2 | ≤7.5 |
PDL (dB) | ≤0.20 | ≤0.25 | ≤0.20 | ≤0.25 | ≤0.25 | ≤0.30 | ≤0.25 | ≤0.30 |
Uniformity (dB) | ≤1.0 | ≤1.4 | ≤1.2 | ≤1.6 | ≤1.4 | ≤1.8 | ≤1.4 | ≤1.8 |
Directivity (dB) | ≥55 | |||||||
Operating temperature (℃) | -40 ~ +85 |