Grating resonances in air-silica microstructured optical fibers

Citation
Bj. Eggleton et al., Grating resonances in air-silica microstructured optical fibers, OPTICS LETT, 24(21), 1999, pp. 1460-1462
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS LETTERS
ISSN journal
01469592 → ACNP
Volume
24
Issue
21
Year of publication
1999
Pages
1460 - 1462
Database
ISI
SICI code
0146-9592(19991101)24:21<1460:GRIAMO>2.0.ZU;2-Y
Abstract
We report what is believed to be the first demonstration of optical fiber g ratings written in photonic crystal fibers. The fiber consists of a germani um-doped photosensitive core surrounded by a hexagonal periodic air-hole la ttice in a silica matrix. The spectra of these gratings allow for a detaile d characterization of the fiber. In particular, the gratings facilitate cou pling to higher-order leaky modes. We show that the spatial distribution an d the effective index of these modes are determined largely by the design o f the lattice and that the grating spectra are unaffected by the refractive index surrounding the fiber. We describe these measurements and correspond ing simulations and discuss their implications for the understanding of suc h air-hole structures. (C) 1999 Optical Society of America.