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Proceedings Paper

Recent development on CO2-laser written long-period fiber gratings
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Paper Abstract

The paper reviews the recent progress on CO2-laser writing of long-period fiber gratings (LPFGs) in different kinds of fibers, including conventional single-mode fiber (SMF), boron-doped SMF, polarization-maintaining fiber, photonic crystal fiber, and polarization-maintaining photonic crystal fiber. In particular, we report the writing dynamics for the understanding of the physical mechanisms involved in the writing process and show that the CO2-laser pulses can not only relax the internal stress in the fiber core but also induce a frozen-in stress in the cladding of the fiber under tension. The applications of CO2-laser written LPFGs, especially for the realization of broadband optical couplers, are also discussed.

Paper Details

Date Published: 11 November 2008
PDF: 11 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 713437 (11 November 2008); doi: 10.1117/12.802448
Show Author Affiliations
Yunqi Liu, Shanghai Univ. (China)
City Univ. of Hong Kong (Hong Kong, China)
Kin Seng Chiang, City Univ. of Hong Kong (Hong Kong China)

Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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