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Phase-modulating optical coherence domain reflectometry by synthesis of coherence function

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2 Author(s)
Hotate, K. ; Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan ; Saida, T.

Phase-modulating optical coherence domain reflectometry by synthesis of the coherence function is proposed as a promising method for diagnosing optical waveguide devices and systems, and basic experiments are carried out. In this method, a delta-function-like optical coherence function is synthesised by the direct frequency modulation of a laser diode, and scanned by the phase modulation of a reference lightwave in an interferometer. A spatial resolution of ~1.8 mm is achieved with ~18 cm measuring range in basic experiments

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Electronics Letters  (Volume:31 ,  Issue: 6 )