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Proceedings Paper

Accurate cancellation (to milliHertz levels) of optical phase noise due to vibration or insertion phase in fiber transmitted light
Author(s): Long-Sheng Ma; Peter Jungner; Jun Ye; John L. Hall
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Paper Abstract

A single-mode optical fiber is a convenient and efficient transmission medium for optical signal. However, the optical insertion phase written on the light field by the fiber is very sensitive to the surrounding environment, such as temperature or acoustic pressure. This phase-noise modulation tends to corrupt the original delta-looking Hz-level optical spectrum by broadening it toward the kilohertz domain. Here we describe a simple and effective technique for accurate cancellation of such induced phase noise, thus allowing fiber-based optical signal transmission in very demanding high-precision frequency-based applications where optical phase noise is critical the system is based on double-pass heterodyne measurement and digital phase division by two to obtain the correction signal for the phase compensating AOM. The underlying physical principle is the fact that an optical fiber path ordinarily possesses an excellent degree of linearity and reciprocity, such that two counterpropagating signals can experience the sam phase perturbations. Overall, the fiber's kilohertz level of broadening is reduced to sub-millihertz domain by our correction.

Paper Details

Date Published: 26 April 1995
PDF: 11 pages
Proc. SPIE 2378, Laser Frequency Stabilization and Noise Reduction, (26 April 1995); doi: 10.1117/12.208231
Show Author Affiliations
Long-Sheng Ma, Univ. of Colorado/Boulder and National Institute of Standards and Technology (United States)
Peter Jungner, Univ. of Colorado/Boulder and National Institute of Standards and Technology (United States)
Jun Ye, Univ. of Colorado/Boulder and National Institute of Standards and Technology (United States)
John L. Hall, Univ. of Colorado/Boulder and National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 2378:
Laser Frequency Stabilization and Noise Reduction
Yaakov Shevy, Editor(s)

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