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Proceedings Paper

Highly compact temperature-insensitive phase-shifted and multiple-phase-shifted long-period fiber gratings by use of a CO2 laser
Author(s): Yinian Zhu; Ping Shum; X. Chen; C. H. Tan; Hui-Wen Bay; C. Lu
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Paper Abstract

We demonstrate the first fabrication of highly-compact and temperature-insensitive phase-shifted and multiple phase-shifted long-period gratings using the focused pulses of CO2 laser with point-by-point technique. By introducing the 3π/2, π, or π/2 phase shifts in the different location of the gratings with 480 μm of a period-length and total number about 16 - 21 periods, the symmetrical and asymmetrical pandpass filters based on those gratings can be obtained. The temperature sensitivity of formed gratings is about 8.8 pm/°C at a temperature range of 23°C - 190°C. Such fiber grating component could be used as an all-fiber oscillator in the laser cavity. Long-period gratings with different phase shifts are also investigated with various notches of resonance attenuations. All gratings fabricated are compactness to be packaged into the fiber-optic based devices.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.590742
Show Author Affiliations
Yinian Zhu, Nanyang Technological Univ. (Singapore)
Ping Shum, Nanyang Technological Univ. (Singapore)
X. Chen, Nanyang Technological Univ. (Singapore)
C. H. Tan, Nanyang Technological Univ. (Singapore)
Hui-Wen Bay, Nanyang Technological Univ. (Singapore)
C. Lu, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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