Open AccessBroadband chromatic dispersion in fiber-coupled optical interferometry
Author(s) -
Ryan Allured,
Jonathan B. Ashcom
Publication year - 2021
Publication title -
applied optics
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.427190
Subject(s) - interferometry , optics , dispersion (optics) , materials science , optical fiber , fiber , chromatic aberration , chromatic scale , physics , composite material
Chromatic dispersion is a well-known technical challenge in optical interferometry, and the issue is exacerbated when using optical fibers for beam transport. The important sources of chromatic dispersion in a fiber-coupled optical interferometer are investigated using a Mach-Zehnder interferometer operating between 975-1650 nm, with particular attention paid to various dispersive effects in fibers. The compensation of chromatic dispersion is also investigated, and a compensation strategy using bulk glass and fiber stretching is described. A notional dispersion budget is presented for a fiber-coupled interferometer operating in the near infrared, showing that dispersion can be compensated to the λ /20 RMS level over a nearly 700 nm wide bandpass.