2*2 Polarization-maintaining Fiber Couplers
2×2 Polarization‑Maintaining Fiber Coupler, 1064nm Fabricated by fused‑biconical‑taper technology with Panda PM fiber, this 2×2 PM coupler supports bidirectional optical power splitting and combining at 1064 nm. It preserves polarization state with high PER and low excess loss....
- Product Introduction
Fabricated by fused‑biconical‑taper technology with Panda PM fiber, this 2×2 PM coupler supports bidirectional optical power splitting and combining at 1064 nm. It preserves polarization state with high PER and low excess loss. Compact in‑line package guarantees stable performance under varying temperatures. Ideal for fiber lasers, coherent detection, fiber‑optic sensing and interferometric measurement. Custom split ratio, fiber length and connector types are available.
Polarization-maintaining fiber coupler parameter table
| 780,840±15nm | 980,1064±15nm | 1310,1480,1550±15nm | |||||
|---|---|---|---|---|---|---|---|
| Parameter | CR | P | A | P | A | P | A |
| IL(dB)@Central wavelength | 50/50 | ≤3.8 | ≤4.0 | ≤3.6 | ≤3.8 | ≤3.4 | ≤3.6 |
| 30/70 | ≤6.3/2.2 | ≤6.5/2.4 | ≤5.75/2.0 | ≤6.1/2.1 | ≤5.6/1.95 | ≤5.75/2.1 | |
| 20/80 | ≤8.2/1.7 | ≤8.5/1.9 | ≤8.0/1.5 | ≤8.2/1.7 | ≤7.6/1.4 | ≤8.0/1.5 | |
| 10/90 | ≤11.8/1.4 | ≤12.0/1.6 | ≤11.6/1.2 | ≤11.8/1.4 | ≤11.2/0.85 | ≤11.6/1.0 | |
| 5/95 | ≤15.0/1.0 | ≤15.2/1.2 | ≤14.8/0.8 | ≤15.0/1.0 | ≤14.2/0.6 | ≤14.8/0.8 | |
| 3/97 | ≤17.5/0.9 | ≤17.7/1.0 | ≤16.57/0.5 | ≤17.12/0.6 | ≤16.2/0.4 | ≤16.7/0.5 | |
| 2/98 | ≤19.0/0.85 | ≤19.2/0.95 | ≤18.4/0.4 | ≤18.9/0.5 | ≤18.0/0.35 | ≤18.5/0.45 | |
| 1/99 | ≤22.5/0.75 | ≤22.8/0.85 | ≤22.0/0.35 | ≤22.5/0.4 | ≤21.5/0.3 | ≤22/0.4 | |
| 0.1/99.9 | 28~32 | / | ≤0.6 | 28~32 | / | ≤0.3 | |
| ER(dB) | CR＞5% | 20 | 18 | 20 | 18 | 20 | 18 |
| 5%≥CR＞1% | 18 | 16 | 18 | 16 | 18 | 16 | |
| CR≤1% | Out of concern | ||||||
1). The specifications are without connector. For devices with connectors, IL should be 0.3dB(1310~1550) or0.5dB(980~1060) or 0.8dB(780~850) higher, ER should be 2dB lower.
2). The specifications are given for slow axis working only, if fast axis or both axis working needed, IL will be 0.3dB higher.
3). For device adding connectors, key aligns to slow axis if no special requirement
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