Optical waveguides – With optical coupler – Plural
Patent
1997-01-02
1999-09-21
Sanghavi, Hemang
Optical waveguides
With optical coupler
Plural
385123, 359124, 359127, 359161, G02B 628, H04J 1402, H04B 1000
Patent
active
059564407
ABSTRACT:
Wavelength division multiplexed optical signals with different wavelength dispersion are compensated for wavelength dispersion in a optical transmission line. Each multiplexed wavelength .lambda.1-.lambda.n is selected by band pass filters 11-1-11-n. The selected optical signal for each wavelength is independently compensated for the wavelength dispersion by wavelength dispersion compensation sections 12-1-12-n. The wavelength dispersion compensation section of each wavelength has a optical fiber having a dispersion value with polarity opposite to that of the optical transmission line. Zero dispersion is attained for each wavelength .lambda.1-.lambda.n as a whole, and transmission distance of wavelength division multiplexed optical signals can be extended.
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Mikami Satoshi
Watanabe Seiji
NEC Corporation
Sanghavi Hemang
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