標題: Radio-over-fiber DSB-to-SSB conversion using semiconductor lasers at stable locking dynamics
作者: Hsieh, Kun-Lin
Hung, Yu-Han
Hwang, Sheng-Kwang
Lin, Chien-Chung
光電系統研究所
Institute of Photonic System
公開日期: 2-五月-2016
摘要: In radio-over-fiber systems, optical single-sideband (SSB) modulation signals are preferred to optical double-sideband (DSB) modulation signals for fiber distribution in order to mitigate the microwave power fading effect. However, typically adopted modulation schemes generate DSB signals, making DSB-to-SSB conversion necessary before or after fiber distribution. This study investigates a semiconductor laser at stable locking dynamics for such conversion. The conversion relies solely on the nonlinear dynamical interaction between an input DSB signal and the laser. Only a typical semiconductor laser is therefore required as the key conversion unit, and no pump or probe signal is necessary. The conversion can be achieved for a broad tunable range of microwave frequency up to at least 60 GHz. In addition, the conversion can be carried out even when the microwave frequency, the power of the input DSB signal, or the frequency of the input DSB signal fluctuates over a wide range, leading to high adaptability and stability of the conversion system. After conversion, while the microwave phase quality, such as linewidth and phase noise, is mainly preserved, a bit-error ratio down to 10(-9) is achieved for a data rate up to at least 8 Gb/s with a detection sensitivity improvement of more than 1.5 dB. (C) 2016 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.24.009854
http://hdl.handle.net/11536/133629
ISSN: 1094-4087
DOI: 10.1364/OE.24.009854
期刊: OPTICS EXPRESS
Volume: 24
Issue: 9
起始頁: 9854
結束頁: 9868
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