Theoretical analysis of a method for extracting the phase of a phase-amplitude modulated signal generated by a direct-modulated optical injection-locked semiconductor laser
- Authors
- Lee, Hwan; Cho, Jun-Hyung; Sung, Hyuk-Kee
- Issue Date
- May-2017
- Publisher
- SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
- Keywords
- laser direct modulation; amplitude modulation; phase modulation; phase-amplitude modulation; injection-locked lasers
- Citation
- OPTICAL ENGINEERING, v.56, no.5
- Journal Title
- OPTICAL ENGINEERING
- Volume
- 56
- Number
- 5
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/5843
- DOI
- 10.1117/1.OE.56.5.056112
- ISSN
- 0091-3286
- Abstract
- The phase modulation (PM) and amplitude modulation (AM) of optical signals can be achieved using a direct-modulated (DM) optical injection-locked (OIL) semiconductor laser. We propose and theoretically analyze a simple method to extract the phase component of a PM signal produced by a DM-OIL semiconductor laser. The pure AM component of the combined PM-AM signal can be isolated by square-law detection in a photodetector and can then be used to compensate for the PM-AM signal based on an optical homodyne method. Using the AM compensation technique, we successfully developed a simple and cost-effective phase extraction method applicable to the PM-AM optical signal of a DM-OIL semiconductor laser. (C) The Authors.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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