Wavelength-division multiplexing optical communication apparatus and method therefor
Patent 5745613 Issued on April 28, 1998. Estimated Expiration Date: 
December 6, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 6, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesReducing phase fluctuations in a coherent radiation beam using feedforward control Wavelength division multiplexed optical communication transmitters Chirped-pulse multiple wavelength telecommunications system Patent #: 5631758 InventorsAssigneeApplicationNo. 759689 filed on 12/06/1996US Classes:385/24, Plural (e.g., data bus)385/1, TEMPORAL OPTICAL MODULATION WITHIN AN OPTICAL WAVEGUIDE385/15, WITH OPTICAL COUPLER385/20, Multiple pole multiple throw385/31, Input/output coupler398/32, Pilot signal398/91Different sourcesExaminersPrimary: Palmer, Phan T. H.Attorney, Agent or FirmForeign Patent References
International ClassG02B 006/28Foreign Application Priority Data1995-12-15 JPAbstractA wavelength division-multiplexing optical communication apparatus and method includes a plurality of modulators for respectively modulating the intensity of a plurality of light rays, each having a different wavelength from one another, with a data signal from a signal source, a wavelength division-multiplexer for combining the light from the modulators, fiber optics for transmitting light from the wavelength division multiple and a wavelength division-multiplexed light receiver for separating the light from the transmission path fiber optics by wavelength (and receiving the separated light, respectively. The light modulators control or select a magnitude of the phase modulation caused at the time of intensity modulation, and the modulator for each light wavelength is separately controlled and selected for the operating point, so as to cause a phase modulation component which minimizes the waveform distortion after transmission through the transmission path fiber optics. Hence, the apparatus is not limited in its wavelength range or transmission distance caused by waveform distortion due to the wavelength dependency of dispersion of transmission path.Other References
Field of SearchPlural (e.g., data bus)TEMPORAL OPTICAL MODULATION WITHIN AN OPTICAL WAVEGUIDE DIRECTIONAL OPTICAL MODULATION WITHIN AN OPTICAL WAVEGUIDE WITH OPTICAL COUPLER Multiple pole multiple throw Double pole multiple throw Single pole multiple throw (relay switch) Single pole single throw Input/output coupler "Y" coupler Star coupler | |
