Double-clad Fiber Couplers
Description
The double-clad fiber couplers developed by Castor Optics combine single-mode light transmission with multimode light transfer. Light transmission in the core is quasi-lossless from Port A to Port S, and again from Port S to Port A (see diagram). In the inner cladding of the double-clad fiber, light transfer occurs from the inner cladding of Port S to the multimode branch called Port B in couplers designed for light collection. Bi-directional double-clad fiber couplers allow for efficient injection (Port B to Port S) AND collection (Port S to Port B).
Double-clad Fiber Couplers
Specifications |
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|---|---|
| Single-mode Central Wavelength: | 530, 780, 1060 or 1300 nm |
| Single-mode Insertion Loss: | < 0.5 dB |
| Multimode Transfer: | ≥ 60% |
| Multimode Spectral Range: | 400-1600 nm |
Applications
- Optical Coherence Tomography (OCT)
- Fluorescence Imaging
- Confocal Microscopy
- Spectroscopy
- Surface Plasmon Resonance (SPR) Sensing
- Speckle-Free Single-Fiber Endoscopy
- LIDAR
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How to order?
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Ships from:
Canada
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Sold by:
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On FindLight:
since 2021
Frequently Asked Questions
Double-clad fiber couplers combine single-mode light transmission with multimode light transfer.
Double-clad fiber couplers are used in Optical Coherence Tomography (OCT), Fluorescence Imaging, Confocal Microscopy, Spectroscopy, Surface Plasmon Resonance (SPR) Sensing, Speckle-Free Single-Fiber Endoscopy, and LIDAR.
Extraction couplers allow for efficient multimode transfer from Port S to Port B, while bidirectional couplers can be used for both extraction (Port S to Port B) and injection (Port B to Port S) of multimode light.
The specifications include insertion loss, multimode transfer efficiency, maximum power level, port configuration, fiber lead length, and dimensions of the ports.
Photodarkening may occur at lower wavelengths, and performance in the water absorption region centered at 1388 nm is not guaranteed. Coupler performance under high-power conditions should be determined within the user's setup.