Power efficiency of time-stretch imaging system by using parallel interleaving detection  

作　　者：吕孟轩 戴博 殷松超 张大伟 王旭 

机构地区：[1]Engineering Research Center of Optical Instrument and System,the Ministry of Education,Shanghai Key Laboratory of Modern Optical System,University of Shanghai for Science and Technology [2]The Institute of Photonics and Quantum Sciences,School of Engineering and Physical Sciences,Heriot-Watt University

出　　处：《Chinese Optics Letters》2016年第10期53-57,共5页中国光学快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2015CB352001);the National Science Instrument Important Project(No.2013YQ16043903);the Pujiang Project of Shanghai Science and Technology Commission(No.14PJ1406900);the Innovation Program of Shanghai Municipal Education Commission(No.15ZZ071)

摘　　要：A 38.88 MHz time-stretch line-scan imaging system with parallel interleaving detection is experimentally dem- onstrated. Since only half-chromatic dispersion is used to stretch optical pulses for wavelength-to-time mapping, the power efficiency is significantly improved by 6.5 dB. Furthermore, the theoretical analysis indicates that the power loss can be efficiently reduced for scan rates less than 100 MHz. In addition, a mathematical model for signal-to-noise evaluation is derived, including amplified spontaneous emission noise in the power compensation. Thanks to the improvement of the power efficiency by using parallel interleaving detection, the signal quality is enhanced.A 38.88 MHz time-stretch line-scan imaging system with parallel interleaving detection is experimentally dem- onstrated. Since only half-chromatic dispersion is used to stretch optical pulses for wavelength-to-time mapping, the power efficiency is significantly improved by 6.5 dB. Furthermore, the theoretical analysis indicates that the power loss can be efficiently reduced for scan rates less than 100 MHz. In addition, a mathematical model for signal-to-noise evaluation is derived, including amplified spontaneous emission noise in the power compensation. Thanks to the improvement of the power efficiency by using parallel interleaving detection, the signal quality is enhanced.

关 键 词：Chromatic dispersion EFFICIENCY Imaging systems Optical communication Signal to noise ratio 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]