Fiber Interferometer
Fiber Coupled 90° Optical Hybrid
The FCOH is a passive, micro-optics-based 90° optical hybrid designed for coherent optical signal demodulation, including BPSK and QPSK formats. It functions by mixing the incoming signal (S) with a local oscillator reference signal (L), generating four optical outputs corresponding to the vector sums and differences of the two inputs: S+L, S−L, S+jL, and S−jL. These outputs represent four quadrature states in the complex optical field space. The signals are then directed to two pairs of balanced photodetectors, enabling differential detection of the in-phase (I) and quadrature (Q) components. This configuration allows the extraction of both amplitude and relative phase information through digital signal processing.
Configuration options
Build & quote
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
We confirm the exact part number for your configuration on enquiry.
Type: Regular · Wavelength: 1260~1620 · Version: Standard · Fiber Cover: 900 um tube · Fiber Length: 0.25m · Connector: None
System integration
Integration and compatibility
Use these checks to connect Fiber Coupled 90° Optical Hybrid to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Fiber Cover: 900 um tube · Fiber Length: 0.25m, 0.5m
- Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
- Wavelength and loss budget
- Wavelength: 1260~1620
- Check the Fiber Interferometer passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Technical FAQ
Integration questions for Fiber Coupled 90° Optical Hybrid
Which fiber and connector does the Fiber Coupled 90° Optical Hybrid use?
Fiber Cover: 900 um tube · Fiber Length: 0.25m, 0.5m. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
How should the Fiber Coupled 90° Optical Hybrid be included in an optical power budget?
Wavelength: 1260~1620. Check the Fiber Interferometer passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Need this configured?
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Nearby series comparison
Compare Fiber Coupled 90° Optical Hybrid with the closest available models in the Fiber Interferometer family.
| Selection parameter | Fiber Coupled 90° Optical Hybrid (current) | Scanning Fiber Mach-Zehnder Interferometer | Scanning Fiber Michelson Interferometer |
|---|---|---|---|
| Wavelength range | 1260~1620 | 488, 532, 650, 780, 850, 980, 1060, 1310, 1550, 2000 | 488, 532, 650, 780, 850, 980, 1060, 1310, 1550, 2000 |
| Connector / control | None, FC/APC, Special | FC/PC, FC/APC, Special | FC/PC, FC/APC, Special |
