Coherent Optical Polarization-Shift-Keying (POLSK) Homodyne System Using Phase-Diversity Receivers

Ichiro SETO  Tomoaki OHTSUKI  Hiroyuki YASHIMA  Iwao SASASE  Shinsaku MORI  

IEICE TRANSACTIONS on Electronics   Vol.E75-C   No.1   pp.50-57
Publication Date: 1992/01/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Section on Fundamentals of Next Generation Opto-Technologies)
coherent optical communications,  phase-diversity homodyne receivers,  polarization-shift-keying (POLSK),  

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We propose Polarization-Shift-Keying (POLSK) homodyne system using phase-diversity receivers and theoretically analyze its bit-error-rate (BER) performance. Since the proposed system uses polarization modulation and homodyne detection, it can cancel the phase noise and is attractive at a high bit-rate transmission. It is found that the receiver sensitivity of the proposed POLSK homodyne system is the same as that of POLSK heterodyne system and is much better than that of DPSK phase-diversity homodyne systems at high signal-to-noise ratio (SNR). We also cosider theoreically the effect of the fluctuation of state of polarization (SOP) on the BER performance of POLSK homodyne system.