Open AccessFabrication of high quality, ultra-long fiber Bragg gratings: up to 2 million periods in phase
Author(s) -
Mathieu Gagné,
Sébastien Loranger,
J Lapointe,
Raman Kashyap
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.000387
Subject(s) - optics , fiber bragg grating , materials science , fabrication , interferometry , reflectometry , optical fiber , phase modulation , bandwidth (computing) , phosfos , fiber optic sensor , optoelectronics , plastic optical fiber , phase noise , physics , telecommunications , computer science , medicine , time domain , alternative medicine , pathology , computer vision
The fabrication and characterization of high quality ultra-long (up to 1m) fiber Bragg gratings (FBGs) is reported. A moving phase mask and an electro-optic phase-modulation (EOPM) based interferometer are used with a high precision 1-meter long translation stage and compared. A novel interferometer position feedback scheme to simplify the fabrication process is proposed and analyzed. The ultra-long uniform FBGs show near perfect characteristics of a few picometers bandwidth, symmetrical, near theory-matching group-delay and transmission spectra. Grating characterization using optical backscattering reflectometry and chirped FBGs are also demonstrated. Limitations of the schemes are discussed.