Multi film coupler
The Multi Film Coupler is a high-performance, compact passive component characterized by its low excess loss, high stability, and outstanding reliability. Featuring an epoxy-free optical path, it guarantees consistent performance and enhanced longevity. This coupler is available in a variety of standardized coupling ratios to suit diverse application needs. It is widely employed in long-haul telecommunications, CATV systems, fiber optic sensors, and is integral to FTTH and Local Area Network (LAN) infrastructure for effective signal management.
Description
Features & Applications
| 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 | High Speed Local Area Networks |
| Digital, Hybrid and AM-Video Systems |
Performance Specifications
| Parameter | Multimode Standard Fiber Couplers | |
| Grade | P Grade | A Grade |
| Coupling Ratio（%） | 50/50 | 50/50 |
| Excess Loss (Typical)（dB） | 0.7 | 1.1 |
| Maximum Insertion Loss（dB） | 4.1 | 4.5 |
| Uniformity (Max.)(dB) | 0.61 | 0.8 |
| Center Operating Wavelength（nm） | 850 or 1310 or 1550 | |
| Wavelength Range（nm） | 800-1600 | |
| Directivity(Min.)(dB) | 35 | |
| Operating Temperature(℃) | -20~+80 | |
| Storage Temperature(℃) | -20~+80 | |
| Fiber Type | Corning multimode 50/125, 62.5/125 | |
| Fiber Pigtail Length（m） | 1 m or custom length | |
| Port Configuration | 1×2 or 2×2 | |
| Dimensions (mm) | Package D,E,F,G | |
Coupling Ratio/Insertion Loss Conversion Chart
| Coupling Ratio | P Grade Insertion Loss（dB） | A Grade Insertion Loss（dB） |
| 40/60 | 5.3/3.3 | 5.2/3.6 |
| 30/70 | 6.4/2.7 | 7.0/3.0 |
| 20/80 | 8.5/2.0 | 8.7/2.4 |
| 10/90 | 11.7/1.4 | 12.3/1.9 |
Package Dimensions & Pigtail Style
| Package Dimensions: | |
| 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 |
Ordering Information
| Product | Wavelength | Fiber Type | Connector | Fiber Length |
| 1=1*2 | 1310nm | 1=Bare fiber | FC/PC | 0=0.5m |
| 2=2*2 | 1550nm | 2=900um Loose tube | FC/APC | 1=1m |
| 3=1*3 | 9850nm | SC/PC | 2=2m | |
| 4=1*4 | SC/APC | ect. |
