Comparison of VSB PAM4 and OOK Signal in an EML-Based 80-km Transmission System

A comparison between 51.84-Gb/s vestigial sideband 4-level pulse amplitude modulation (PAM4) and ON-OFF keying (OOK) signals at a transmission distance of 80 km is experimentally demonstrated for the first time. An electro-absorption modulated laser-based intensity-modulation and direct-detection 80...

Full description

Saved in:
Bibliographic Details
Published in:IEEE photonics technology letters 2017-12, Vol.29 (23), p.2063-2066
Main Authors: Hsing-Yu Chen, Lee, Jeffrey, Kaneda, Noriaki, Jyehong Chen, Young-Kai Chen
Format: Article
Language:English
Subjects:
Amplitude modulation
amplitude shift keying
Intensity modulation
Optical attenuators
Optical fiber filters
Optical fibers
optical interconnections
optical modulation format
Optical receivers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A comparison between 51.84-Gb/s vestigial sideband 4-level pulse amplitude modulation (PAM4) and ON-OFF keying (OOK) signals at a transmission distance of 80 km is experimentally demonstrated for the first time. An electro-absorption modulated laser-based intensity-modulation and direct-detection 80-km transmission is achieved using both modulation formats without dispersion compensating fiber. The relative frequency between single sideband filter and signal is adjusted to find an optimized condition for both carrier to signal power ratio and sideband suppression ratio. The experimental results show that with linear equalization and without bandwidth limitation, the OOK signal has a 4-dB better sensitivity compared with PAM4 after 80-km standard single-mode fiber transmission.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2763830