All-light analog-digital converter 2AMSX parallel quantitative coding method

A digital converter, optical-mode technology, applied in the field of optical information processing, can solve the problem that the peak power does not reach the best utilization rate
CN101290457AInactive Publication Date: 2008-10-22UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONIC SCI & TECH OF CHINA
Publication Date
2008-10-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a 2ASSX parallel quantization coding method for an all-optical analog-to-digital converter. The method is as follows: the N-bit all-optical analog-to-digital converter is designed; stable sounding optical pulses and steering optical pulses (analog optical) are input into a splitting coupler array (2) through a wavelength division multiplexer or a polarization couplers (1); the coupler array (2) is formed by series connection of N-1 1x2 couplers, wherein, one output port of each 1x2 coupler is connected with an asymmetric Michelson interferometer (3) and the other output port of each 1x2 coupler is connected with the next 1x2 coupler; an optical fiber microwave circulator or an isolator (4) is arranged on the front of a reflecting port of each asymmetric Michelson interferometer (3); and a transmission port is provided with a band-pass filter or an analyzer (5) which only allows probe light to pass. The structure is combined with adequate splitting ratio of the coupler array (2) and the splitting ratios of couplers of each asymmetric Michelson interferometer (3) to realize parallel output of Gray code pulses by the probe light.
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Description

technical field

[0001] The present invention relates to the technical field of optical information processing, in particular to an all-optical analog-to-digital converter 2AMSX parallel quantization encoding method, that is, N asymmetric Michaels with N-1 1×2 couplers connected in series to a beam splitting input array Sun interferometer (Asym_MichelsonI) parallel output, based on self-phase modulation (SPM) and cross-phase modulation (XPM) parallel quantization and coding to realize N-bit all-optical analog-to-digital converter. Background technique

[0002] Optical signal processing, optical communication, and optical sensing are in urgent need of high-speed, high-precision analog-to-digital converters (ADCs), and all-optical technology is the most promising method to achieve this goal. All-optical ADC involves three basic units and key technologies of optical sampling, optical quantization and optical encoding. Researchers at home and abroad have satisfactorily solved th...

Claims

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