Open AccessAll-optical M-ary ASK signal demultiplexer based on a photonic analog-to-digital conversion
Author(s) -
Takashi Noji,
Tsuyoshi Konishi,
Kazuyoshi Itoh
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.017025
Subject(s) - amplitude shift keying , ask price , demultiplexer , phase shift keying , signal (programming language) , optics , keying , photonics , computer science , quadrature amplitude modulation , on off keying , optical communications repeater , physics , telecommunications , bit error rate , multiplexing , electronic engineering , optical performance monitoring , wavelength division multiplexing , multiplexer , engineering , decoding methods , wavelength , economy , programming language , economics
An all-optical M-ary amplitude shift keying (ASK) signal demultiplexer is proposed and demonstrated. It allowed us to seamlessly demultiplex a high bit-rate optical M-ary ASK signal into on-off keying (OOK) signals without O/E conversion. It is composed of multilevel thresholding using self-frequency shift and OOK signal generation using optical interconnection. A level identification signal is provided as a result of multilevel thresholding and it is fed to an optical interconnection circuit which can generate corresponding OOK signals. We demonstrate the quadrature ASK signal demultiplexing at 100 Gsymbol/s and its error free operation at 10 Gb/s.