Conversion between optical ASK and optical FSK using nonlinear dynamics of semiconductor lasers
Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 8432 |
Publication status | Published - 2012 |
Publication series
Name | |
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Volume | 8432 |
ISSN (Print) | 0277-786X |
Conference
Title | Semiconductor Lasers and Laser Dynamics V |
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Place | Belgium |
City | Brussels |
Period | 16 - 19 April 2012 |
Link(s)
Abstract
When a semiconductor laser is subject to an incoming optical carrier, equivalently an external optical injection, it can enter nonlinear period-one dynamics through Hopf bifurcation due to the radical modification in field-carrier coupling of the injected laser which results from the dynamical competition between injection-imposed laser oscillation and injection-shifted cavity resonance. Equally-separated spectral components appear, of which intensity and frequency depend strongly on the injection level and frequency. This suggests that a dynamical amplitude or frequency variation of the incoming optical signal, such as amplitude-shift keying (ASK) or frequency-shift keying (FSK), respectively, would lead to corresponding dynamical variation in amplitude and frequency of each spectral component. Therefore, by properly selecting the optical frequency of the output optical carrier and by minimizing the residual ASK and FSK modulation, both ASK-to-FSK and FSK-to-ASK conversions can be achieved, where bit-error ratio down to 10 -12 is achieved with a slight power penalty. Only a typical semiconductor laser is necessary as the key conversion unit. In addition, frequency shifts of the optical carrier can also be achieved, which allows a simultaneous frequency conversion of the optical carrier if required. © 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Research Area(s)
- Modulation Format Conversion, Nonlinear Dynamics, Optical Communications, Optical Frequency Conversion, Optical Injection, Optical Signal Processing, Semiconductor Lasers
Citation Format(s)
Conversion between optical ASK and optical FSK using nonlinear dynamics of semiconductor lasers. / Hwang, Sheng-Kwang; Chan, Sze-Chun; Lin, Shiuan-Li et al.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8432 2012. 843210.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8432 2012. 843210.
Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review