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A Novel Speckle Analysis Scheme for Coherence Measurement Using a Standard Phase Modulator

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2 Author(s)
Inoue, M. ; NTT Access Network Service Syst. Labs., NTT Corp., Tsukuba, Japan ; Ito, F.

This letter describes a novel configuration and theory for the degree of coherence measurement based on the statistical speckle analysis in coherent optical frequency domain reflectometry. The difference from the previous letter is using a standard phase modulator instead of a single-sideband modulator, which not only simplifies the system configuration, but also yields modulation efficiency, resulting in the operation with lower light source power. A novel theory is presented to describe the operation of the proposed configuration, and experimental results show the validity of the new configuration and theory.

Published in:

Photonics Technology Letters, IEEE  (Volume:26 ,  Issue: 3 )