Wideband Optical Couplers
Wideband optical couplers split or couple optical power in two wavelength regions while maintaining a very broad operating bandwidth.
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Wavelength Division Multiplexer Considered
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The development of WDM (wavelength division multiplexing) technology has greatly helped us to expand the network capacity over a single fiber. A fiber optic coupler is a device used in
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We produce fiber-coupled Wavelength-Division Multiplexing (WDM) devices that combine (Mux) or separate (DeMux) multiple wavelength channels into or from a single optical fiber. Two types are
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Coarse wavelength-division multiplexing (CWDM), in contrast to DWDM, uses increased channel spacing to allow less sophisticated and thus cheaper transceiver designs.
Wavelength Division Multiplexing
An interferometric device uses 2 interfering paths of different lengths to resolve wavelengths Typical configuration: 2 3-dB directional couplers connected with 2 paths having different lengths
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3.5 Wavelength multiplexing and demultiplexing
With just two wavelengths, the multiplexers and demultiplexers can be based on directional couplers because, as mentioned earlier in Section 3.2, couplers are naturally wavelength-dependent and with