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Spectral Difference Interferometry for the Characterization of Optical Media
Author(s) -
Bottrill Kyle R. H.,
Ettabib Mohamed A.,
Demirtzioglou Iosif,
Marchetti Riccardo,
Lacava Cosimo,
Parmigiani Francesca,
Richardson David J.,
Petropoulos Periklis
Publication year - 2019
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201900007
Subject(s) - interferometry , optics , resonator , ranging , phase (matter) , dispersion (optics) , sensitivity (control systems) , phase difference , optical fiber , free spectral range , materials science , physics , telecommunications , computer science , electronic engineering , engineering , quantum mechanics
A new form of interferometry combining high phase sensitivity and excellent mechanical isolation is proposed and demonstrated. These features arise from maintaining a probe and reference tone in the same medium under test at all times, their ultimate homodyne detection, as well as a novel method employing an optical programmable filter which is used to extract their relative phase difference. A compilation of studies performed to illustrate the applicability of the scheme to a range of measurements of optical propagation characteristics is presented. Measurements include the chromatic dispersion of SMF‐28 of lengths ranging from 1 m to 1 km, the nonlinear coefficient of highly nonlinear fiber and the phase transfer profile of an integrated optical ring resonator.