公开(公告)号：US09819417B2

公开(公告)日：2017-11-14

申请号：US14993508

申请日：2016-01-12

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yun Chur Chung ,  Hyun Kyu Shim ,  Hoon Kim

IPC: H04B10/516 ,  H04J14/02 ,  H04B10/54

CPC classification number: H04B10/5162 ,  H04B10/5167 ,  H04B10/541 ,  H04J14/0282

Abstract: 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.