Modulation Format Conversion of OOK to PAM Signals Using Balanced Detection and Intensity Modulation


IEICE TRANSACTIONS on Electronics   Vol.E99-C    No.3    pp.427-429
Publication Date: 2016/03/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.427
Type of Manuscript: BRIEF PAPER
Category: Optoelectronics
optoelectronic processing,  modulator,  photodetector,  optical communication,  

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I report modulation format conversion technology that maps on-off keying to 4-level pulse amplitude modulation signals. The conversion technology is based on balanced detection and intensity modulation. Two input optical on-off keying signals into a balanced photo detector produce an electrical signal that drives an intensity modulator to generate an optical pulse amplitude modulation signal. Two 20Gbit/s on-off keying signals were successfully converted into a 40Gbit/s pulse amplitude modulation signal.