title: Measurement of the optical path length difference in an interferometer using a sinusoidally frequency-modulated light source.
abstract: We develop a technique for measuring the optical path length difference (OPLD) in an interferometer using a frequency-modulated light source. Compared with conventional methods, this technique offers a high sampling rate, high precision, and cost efficiency, and is capable of determining which of the two optical paths is longer. In addition, we show that this technique works properly even when the OPLD is significantly longer than the coherence length of the light source.
authors.forename: Shumpei
authors.initials: S
authors.lastname: Shimada
authors.forename: Makoto
authors.initials: M
authors.lastname: Shizuka
authors.forename: Neisei
authors.initials: N
authors.lastname: Hayashi
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Mizuno
authors.forename: Kentaro
authors.initials: K
authors.lastname: Nakamura