Shenzhen Jiangfan Communication Equipment Co., Ltd.
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Fiber Optical Coupler
The coupler is a detachable connection device between the optical fiber and the optical fiber. It precisely connects the two end faces of the optical fiber, so that the optical energy output of the transmitting fiber can be coupled to the receiving fiber to the maximum extent, and make it intervene in the optical link so as to minimize the impact on the system. The coupler and optical fiber, also divided into single mode and multi-mode two, its role is to achieve optical signal division and circuit, or used to extend the fiber link components, the coupler can convert the optical signal into electrical signal, the multi-mode signal coupling into single mode signal, belonging to the field of optical passive components. Some people will also call the coupler adapter, connector, flange, etc.
| Grade Parameter | P | A | |
| Operating wavelength (nm) | 850 or 1310, others on request | ||
| Operating bandwidth (nm) | ±40 | ||
| Typical excess loss (dB) | 0.4 | 0.7 | |
|
Insertion loss (dB) |
50/50 | ≤3.7/3.7 | ≤4.0/4.0 |
| 40/60 | ≤4.7/2.7 | ≤5.0/3.0 | |
| 30/70 | ≤6.0/2.1 | ≤6.3/2.4 | |
| 20/80 | ≤7.8/1.4 | ≤8.1/1.7 | |
| 20/90 | ≤11.2/0.9 | ≤11.6/1.2 | |
| 5/95 | ≤14.5/0.7 | ≤15.0/1.0 | |
| 2/98 | ≤18.6/0.6 | ≤19.4/0.9 | |
| 1/99 | ≤22.0/0.5 | ≤22.8/0.8 | |
| Uniformity (50/50) (dB) | ≤0.5 | ≤0.8 | |
| Directivity (dB) | ≥40 | ||
| Operating temperature (℃) | -40 ~ +85 | ||
| Fiber type (μm) | 50/125 or 62.5/125 Multi-Mode | ||