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WAVELENGTH MULTIPLEXER-DEMULTIPLEXER HAVING A WIDE FLAT RESPONSE WITHIN THE SPECTRAL PASSBAND
WAVELENGTH MULTIPLEXER-DEMULTIPLEXER HAVING A WIDE FLAT RESPONSE WITHIN THE SPECTRAL PASSBAND
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机译：在频谱通带内具有宽频响应的波长多路复用器-多路分解器
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摘要
A wavelength demultiplexer having a substantially flat output response withinits passbandis disclosed. The demultiplexer comprises a first wavelength demultiplexeroptically coupled to asecond wavelength demultiplexer. The first wavelength demultiplexer has a freespectral rangeapproximately equal to channel spacing of the second wavelength demultiplexerthereby providingthe substantially flat output response within the passband. The firstwavelength demultiplexer is aresonant optical cavity, absent distinct output ports, and light propagatingbetween the firstwavelength demultiplexer and the second wavelength demultiplexer is unguided.The absence ofdistinct output ports in the first wavelength demultiplexer reduces ripples inthe substantially flatoutput response within the passband. Alternatively, the first wavelengthdemultiplexer is replacedby an MMI-phasar.
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