Single mode double window coupler
This coupler is a compact, high-performance passive component characterized by its low excess loss, high stability, and exceptional reliability. Featuring an epoxy-free optical path and available in various coupling ratios, it ensures superior long-term performance in demanding environments. It is widely deployed in long-haul telecommunications, CATV systems, fiber optic sensors, FTTH, and local area networks (LAN) for efficient optical signal distribution and monitoring.
Description
| Features | Applications |
| Low Excess Loss | Long-haul Telecommunications |
| Compact Size | CATV Systems & Fiberoptic Sensors |
| Various Coupling Ratio | FTTH & LAN |
| High stability and reliability | Local Area Network |
| Epoxy free on optical path |
Performance Specifications |
| Singlemode Dual Window Wideband Couplers | ||||||||
| Grade | P Grade | A Grade | ||||||
| Coupling Ratio（%） | 50/50 | 50/50 | ||||||
| Excess Loss (Typical)（dB） | 0.1 | 0.1 | ||||||
| Maximum lnsertion loss（dB） | 3.5 | 3.5 | ||||||
| Uniformity (Max.)(dB) | 0.7 | 1 | ||||||
| Polarization Sensitivity (dB) | 0.15 | 0.2 | ||||||
| Operating Wavelength（nm） | 1310/1550±40 or custom wavelength | |||||||
| Coupling Ratio（%） | 1~50 | |||||||
| Directivity (dB) | ≥55 | |||||||
| Operating Temperature(℃) | -20~+80 | |||||||
| Storage Temperature(℃) | -20~+80 | |||||||
| Fiber Type | Corning singlemode SMF-28,DS fiber or flexcore | |||||||
| Fiber Pigtail Length（m） | 1 | |||||||
| Port Configuration | 1×2 or 2×2 | |||||||
| Dimensions (mm) | Package D,E,F,G | |||||||
| Coupling Ratio/insertion Loss Conversion Chart |
| Coupling Ratio | lnsertion Loss | |||||||
| P Grade | A Grade | |||||||
| 40/60 | 4.7/2.6 | 5.0/2.8 | ||||||
| 30/70 | 6.0/2.0 | 6.2/2.1 | ||||||
| 20/80 | 7.8/1.4 | 8.4/1.6 | ||||||
| 10/90 | 11.2/0.6 | 12./0.8 | ||||||
| 5/95 | 14.2/0.4 | 15.2/0.5 | ||||||
| 2/98 | 18.5/0.2 | 19.0/0.3 | ||||||
| 1/99 | 21.0/0.2 | 21.5/0.26 | ||||||
| Package Dimensions & Pigtail Style |
| Package D：3mm x 45mm stainless steel tube | |
| Package E：3mm x 54mm stainless steel tube | |
| Package F：3mm x 60mm stainless steel tube | |
| Package G：10mm x 20mm x 90mm case | |
| Pigtail Style: | |
| Package D,E： | 250um bare fiber |
| Package F | 250um bare fiber or 900um loose tube |
| Package G： | 2mm,3mm cable or 900um loose tube |
| The relation picture of Insertion & Wavelength、Temperature |
| Ordering Information |
| Product | C=CWDM Device | Fiber Type | Connector | Fiber length | |||
| 1=1*2 2=2*2 3=1*3 4=1*4 |
1310nm1550nm | 1=Bare fiber 2=900umLoose tube |
FC/PC FC/APC SC/PC SC/APC ect. |
0=0.5m 1=1m 2=2m ect. |
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