Wavelength multiplexed optical transducer with a s

专利名称：Wavelength multiplexed optical transducer

with a swept wavelength optical source

发明人：Jolyon P. Willson,Darran Kreit申请号：US07/384630申请日：19890725公开号：US04972077A公开日：19901120

摘要：An optical transducer system for use with an optical transducer of the kindwhich produces a wavelength multiplexed optical output signal comprises a broadbandoptical source, and a tunable filter in the form of a Fabry-Perot interferometer

connected to receive a broadband optical signal from the source. The interferometer isrepeatedly swept through its pass band by a control signal of triangular or sawtoothwaveform, producing a swept wavelength optical output signal for application to thetransducer. In one embodiment, the optical output signal from the transducer iscompared with the output signal from the interferometer to decode it, while in anotherembodiment, a control loop maintains the output amplitude (intensity) of the broadbandsource substantially constant over the range of wavelengths used by the transducer,enabling a reference channel provided in the transducer to be used for decodingpurposes.

申请人：SCHLUMBERGER INDUSTRIES LIMITED

代理人：Sanford J. Asman

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