
1×2 Single-Mode Fiber Optic Coupler SMC-780-01-FA
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The LBTEK 1:99 single-mode fiber coupler can distribute the optical energy transmitted through one fiber to two output fibers at a coupling ratio of 1:99. It is primarily used for optical path monitoring in optical systems, where a small portion of light is extracted and its optical parameters are verified to monitor the quality of the main optical path. The coupler features precise splitting ratio, low additional loss, high return loss, and operational stability. Each LBTEK coupler undergoes rigorous testing before leaving the factory and comes with a test datasheet for customer reference.
- Multiple Wavelengths Available within the Range of 405-2000 nm
- Split Ratio 1:99
- FC/APC or FC/UPC Connector
- Single-Ended Fiber 1 Meter

| Operating Wavelength | 780±15 nm |
| Connector Type | FC/APC |
| Operating Temperature | -40~+85 °C |
| Splitting ratio | 1:99 |
| Fiber Type | 780-HP 900µm Loose Hytrel® Tube |
| Fiber length | 1 m |
| Storage Temperature | -40~+85 °C |
| Power Handling | 1000 mW (300 mW with connector) |
| Maximum Pulling Force | 5 N |
| Polarization Dependent Loss (PDL) | ≤ 0.2 dB |
| Insertion Loss | ≤ 0.4 dB (Port 1) ≤ 24.3 dB (Port 2) |
| Return Loss | ≥ 55 dB |
| Port Configuration | 1×2 |
| Package Dimensions | Ø3.0 mm×60 mm |
| Insertion Loss (Typical) | ≤ 0.3 dB |
| Insertion Loss (Max) | ≤ 1.0 dB |






