Self-homodyne detection technique using extracted local oscillator light by GS-SOA in optical coherent transmission

ABSTRACT A self‐homodyne coherent detection technique using gain‐saturated SOA (GS‐SOA) is proposed. In the proposed system, local oscillator (LO) for optical coherent detection is extracted from the optical signal which is sent from the transmitter using the fact that the modulated downlink data ca...

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Bibliographic Details
Published in:Microwave and optical technology letters 2016-03, Vol.58 (3), p.561-565
Main Authors: Mun, Kyoung-Hak, Jung, Sang-Min, Han, Sang-Kook
Format: Article
Language:English
Subjects:
carrier extraction
Carrier frequencies
Coherence
coherent optical transmission
Feasibility
homodyne detection
Microwaves
Optical communication
Oscillators
Saturation
Wavelengths
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Summary:ABSTRACT A self‐homodyne coherent detection technique using gain‐saturated SOA (GS‐SOA) is proposed. In the proposed system, local oscillator (LO) for optical coherent detection is extracted from the optical signal which is sent from the transmitter using the fact that the modulated downlink data can be erased with SOA operation in saturation region. Therefore, carrier frequency offset noise does not occur because LO light which is extracted from the received optical signal has totally same wavelength with the optical signal. In order to operate SOA operates in deep saturation region, high optical input power is needed. The proposed scheme was experimentally demonstrated, and the feasibility was discussed with the experimental results. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:561–565, 2016
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.29611