The temporal coherence of chaotic laser

Nian Fang; Lutang Wang; Fan Luo; Zhaoming Huang

doi:10.1117/12.745731

21 November 2007 The temporal coherence of chaotic laser

Nian Fang, Lutang Wang, Fan Luo, Zhaoming Huang

Proceedings Volume 6781, Passive Components and Fiber-based Devices IV; 67814W (2007) https://doi.org/10.1117/12.745731
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

Abstract

Temporal coherence of chaotic light with dynamically fluctuating in the state of polarization out of a fiber ring laser based on semiconductor optical amplifier (SOA) is investigated. The coherence of the chaotic light is verified by employing Sagnac interferometer, and only the zero-order coherence is observed. Visibility of interference streak is measured in different optical path differences by M-Z interferometer and coherence time of the chaotic laser with 40ps is obtained. Spectrum of the chaotic laser is measured, which is almost the same as that of normal laser light. According to the spectrum, coherence length of the chaotic light is 13mm, then, the coherence time is 43ps, which is basically consistent with the time of 40ps obtained from the experiment. Also it is got that temporal coherence of the chaotic light is independent on current of SOA by experiment. Finally, the superiority of chaos laser's coherence in resolution and sensitivity is indicated when it is applied to the field of low coherence optical source detection.

Citation Download Citation

Nian Fang, Lutang Wang, Fan Luo, and Zhaoming Huang "The temporal coherence of chaotic laser", Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67814W (21 November 2007); https://doi.org/10.1117/12.745731

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