Couplers, Splitters & Combiners

2×2 Double-Clad Fiber Couplers

Our s double-clad 2×2 fiber coupler is made by fusing a large core fiber (200 µm) to the outer cladding layer of a double-clad fiber (single mode core surrounded by an inner cladding and an outer thick cladding). Light in the double-clad fiber’s (DCF) single-mode core propagates through the coupler with little loss. While the reflected lights are collected mainly by the thick outer cladding of the DCF and transferred to the 200 µm large core output fiber with ≥60% coupling efficiency. It forms a miniature fiber optical sensor head for various applications. We offer one of the industry’s most comprehensive selections of fused fiber couplers and splitters, designed for a wide range of application scenarios. Backed by over 25 years of production and engineering expertise, our products deliver industry-leading performance, reliability, and cost-effectiveness.

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Configuration options

Build & quote

Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.

Center WavelengthCollect FiberDouble CladdingPigtail StyleFiber LengthConnector InputConnector OutputConnector Signal

We confirm the exact part number for your configuration on enquiry.

Center Wavelength: 780 nm · Collect Fiber: 200 µm NA · Double Cladding: DCF 13 · Pigtail Style: 900um Jacket · Fiber Length: 0.25m · Connector Input: None · Connector Output: None · Connector Signal: None

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Datasheets & documents

System integration

Integration and compatibility

Use these checks to connect 2×2 Double-Clad Fiber Couplers to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.

Optical interface and fiber: Collect Fiber: 200 µm NA · Pigtail Style: 900um Jacket; 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: Center Wavelength: 780 nm, 1060 nm, 1310 nm, 1550 nm; Check the Couplers, Splitters & Combiners 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 2×2 Double-Clad Fiber Couplers

Which fiber and connector does the 2×2 Double-Clad Fiber Couplers use?

Collect Fiber: 200 µm NA · Pigtail Style: 900um Jacket. 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 2×2 Double-Clad Fiber Couplers be included in an optical power budget?

Center Wavelength: 780 nm, 1060 nm, 1310 nm, 1550 nm. Check the Couplers, Splitters & Combiners 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.