Serial wavelength division 1 GHz line-scan microscopic imaging  

作　　者：Fangjian Xing Hongwei Chen Cheng Lei Zhiliang Weng Minghua Chen Sigang Yang Shizhong Xie 

机构地区：[1]Tsinghua National Laboratory for Information Science and Technology(TNList),Beijing 100084,China [2]Department of Electronic Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Photonics Research》2014年第4期31-34,共4页光子学研究（英文版）

基　　金：by the National Basic Research Program of China(973 Program)2012CB315703;the Key Projects of International Cooperation NSFC 61120106001,61322113,and 61090391;。

摘　　要：A serial line scan microscopic imaging system with 1 GHz scan rate is proposed and demonstrated.This method is based on optical time-stretch in dispersive fiber to realize superfast scan imaging.Furthermore,a wavelength division technique is utilized to overcome the trade-off between high frame rate and spatial resolution caused by dispersion-induced pulse overlap.Every single frame is carved into two channels by optical filters and is detected in different wavelength bands separately.Then,both channels are combined to reconstruct the whole frame.By this method,an imaging system with spatial resolution of 28μm at line scan rate of 1 GHz with chromatic dispersion of 1377 ps∕nm is realized.It has the potential to capture fast,nonrepetitive transient phenomena with a timescale of less than one nanosecond.

关 键 词：optical fiber DISPERSION 

分 类 号：TN2[电子电信—物理电子学]