Various fiber optic coupler models

Fiber optic couplers include a wide range of models such as fused, planar, Y-couplers, T-couplers, star couplers, PLC splitters, and polarization-maintaining couplers, covering singlemode and multimode applications across multiple wavelengths. Types of Fiber Optic Couplers1.

Fused Couplers

Made by fusing and stretching fibers together, allowing light to transfer via evanescent field coupling. Common for low-cost, small-scale applications. Available in single window, dual window, or wideband configurations.

2. Planar Lightwave Circuit (PLC) CouplersFabricated on a planar substrate for high stability and uniform splitting. Suitable for large-scale networks and high-density applications.

Models include 1x4, 1x8, 1x16, and higher fan-out configurations. 3.

Y-

Couplers and T-CouplersY-Couplers: Equal power distribution to two outputs.

T-

Couplers: Unequal power distribution, used to split or combine signals across multiple ports. 4.

Star and Tree Couplers

Star Couplers: Non-directional, distribute input signals evenly to multiple outputs. Tree Couplers: Hierarchical distribution, often used in local area networks. 5.

Polarization-

Maintaining Couplers

Maintain the polarization state of light, critical for interferometry and sensing applications. Available in fixed ratios and tap configurations. 6.

Wavelength-

Specific CouplersCWDM Couplers: Coarse wavelength division multiplexing for short-distance networks.

DWD

M Couplers: Dense wavelength division multiplexing for long-distance, high-channel-count systems. Dual wavelength and wideband couplers are also available. Port Configurations1x2, 1x4, 1x8, 1x16, 1x32: Common splitter configurations.

Nx

M Couplers: Flexible input-output arrangements for complex networks. Side Pump Combiners: Specialized for fiber lasers and amplification systems.

Wavelength Ranges

Typical models cover 850 nm, 900 nm, 1060 nm, 1310 nm, 1550 nm, and wideband ranges from 900–1600 nm. Selection depends on singlemode or multimode fiber compatibility and application requirements.

Manufacturers and Model Availability

Over 905 fiber optic coupler models are listed from 35 manufacturers, including options for fused, planar, wideband, and polarization-maintaining designs. Datasheets and specifications are available for download, allowing selection based on insertion loss, splitting ratio, and PDL.

Key Selection Considerations

Fiber Type: Singlemode vs. multimode. Coupler Type: Splitter, combiner, star, tree, or specialized. Port Count: Number of inputs and outputs.

Wavelength: Single window, dual window, or wideband. Performance Metrics: Insertion loss, return loss, splitting ratio, and polarization-dependent loss (PDL),. For a full catalog of available models, including datasheets and manufacturer details, you can explore comprehensive listings such as those on GoPhotonics, which provide filters to narrow down by wavelength, port count, and coupler type.