专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09154226B2 Optical signal quality monitoring method and apparatus using a software-based synchronized amplitude histogram 有权
标题翻译：光信号质量监测方法和装置采用基于软件的同步幅度直方图
公开(公告)号：US09154226B2
公开(公告)日：2015-10-06
申请号：US13929110
申请日：2013-06-27
申请人： Korea Advanced Institute of Science and Technology
发明人： Yun Chur Chung , Hyeok Gyu Choi , Jun Ho Chang
IPC分类号： H04B10/079
CPC分类号： H04B10/07953
摘要： An optical signal quality monitoring apparatus includes an optical detector for directly receiving an optical signal modulated in an optical path and converting the optical signal to an electric signal, an asynchronous sampling unit for asynchronously sampling the electric signal of the optical detector at a reduced speed, and a digital signal processor for monitoring an optical signal quality by finding a synchronized amplitude histogram of data sampled in the asynchronous sampling unit. An optical signal quality monitoring method includes (a) a step of allowing an optical detector to directly receive a modulated optical signal and to convert the optical signal to an electric signal; (b) a step of allowing an asynchronous sampling unit to asynchronously sample the electric signal; and (c) a step of allowing a digital signal processor to monitor an optical signal quality by generating a synchronized amplitude histogram of sampled data.
摘要翻译：光信号质量监测装置包括：光检测器，用于直接接收在光路中调制的光信号并将光信号转换为电信号;异步采样单元，用于以降低的速度异步采样光检测器的电信号，以及数字信号处理器，用于通过找到在异步采样单元中采样的数据的同步振幅直方图来监视光信号质量。光信号质量监测方法包括：（a）允许光检测器直接接收经调制的光信号并将光信号转换为电信号的步骤; （b）允许异步采样单元异步采样电信号的步骤; 以及（c）允许数字信号处理器通过产生采样数据的同步幅度直方图来监视光信号质量的步骤。

2. 发明授权

US11799556B2 Optical-time-division-multiplexed transmission system using sinusoidally modulated optical signal as input pulse source 有权
公开(公告)号：US11799556B2
公开(公告)日：2023-10-24
申请号：US17631412
申请日：2020-02-26
申请人： KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人： Yun Chur Chung , Sunghyun Bae , Byunggon Kim , Minsik Kim
IPC分类号： H04B10/524 , H04B10/2581 , H04B10/50 , H04J14/08 , H04L25/03
CPC分类号： H04B10/524 , H04B10/2581 , H04B10/504 , H04J14/08 , H04L25/03891
摘要： Disclosed are an optical-time-division-multiplexed transmission method and system using a simple sinusoidally modulated optical signal as an input pulse source. An optical-time-division-multiplexed transmission system comprises: an optical-time-division-multiplexed transmitter by applying a sinusoidal electrical signal, a first multi-level electrical PAM signal, and a second multi-level electrical PAM signal so as to generate an optical-time-division-multiplexed multi-level PAM signal; an optical detector for converting the transmitted optical-time-division-multiplexed PAM signal into an electrical signal; a time-division-demultiplexer for demultiplexing the detected electrical signal into two signals; a MIMO equalizer; and two decision elements for determining the levels of two demultiplexed signals obtained from the MIMO equalizer.

3. 发明授权

US09819417B2 Method and apparatus for generating optical polar return-to-zero amplitude modulation signal using reflective semiconductor optical amplifier and wavelength-division-multiplexed passive optical network system using the same 有权
公开(公告)号：US09819417B2
公开(公告)日：2017-11-14
申请号：US14993508
申请日：2016-01-12
申请人： Korea Advanced Institute of Science and Technology
发明人： Yun Chur Chung , Hyun Kyu Shim , Hoon Kim
IPC分类号： H04B10/516 , H04J14/02 , H04B10/54
CPC分类号： H04B10/5162 , H04B10/5167 , H04B10/541 , H04J14/0282
摘要： The present invention can operate a reflective semiconductor optical amplifier at ultrahigh speed using a polar return-to-zero (RZ) modulation method, and operate a reflective semiconductor optical amplifier (RSOA) whose modulation bandwidth is limited at ultrahigh speed by generating signals vertically symmetrical using a newly suggested polar RZ signal generator when generating an amplitude modulation signal at a transmission end. The present invention can overcome the problem that a modulation speed cannot be increased to 10 Gb/s or above due to signal distortion by inter-symbol-interference when generating an ultrahigh speed amplitude modulation signal using an RSOA of low price having a very narrow modulation bandwidth in an RSOA-based optical network. Also, the present invention has an effect of receiving the generated amplitude modulation signal through a direct detection receiver which is cost-effective and simple, and further has an effect of enabling ultrahigh speed operation of the RSOA-based WDM PON.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式