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Title: Asymmetric long period fiber gratings fabricated by use of CO₂laser to carve periodic grooves on the optical fiber
Authors: Wang, Yiping
Wang, D. N.
Jin, Wei
Rao, Yun-Jiang
Peng, Gang Ding
Subjects: Optical fibre fabrication
Diffraction gratings
Carbon compounds
Laser materials processing
Optical fibre losses
Refractive index
Issue Date: 9-Oct-2006
Publisher: American Institute of Physics
Source: Applied physics letters, 9 Oct. 2006, v. 89, no. 15, 151105, p. 1-3.
Abstract: An asymmetric long period fiber grating (LPFG) with a large attenuation of −47.39 dB and a low insertion loss of 0.34 dB is fabricated by use of focused CO₂laser beam to carve periodic grooves on one side of the optical fiber. Such periodic grooves and the stretch-induced periodic microbends can effectively enhance the refractive index modulation and increase the average strain sensitivity of the resonant wavelength of the LPFG to −102.89 nm/mε. The resonant wavelength and the peak attenuation of the LPFG can be tuned by ∼ 12 nm and ∼ 20 dB, respectively, by the application of a stretching force.
Rights: © 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Yi-Ping Wang et al., Appl. Phys. Lett. 89, 151105 (2006) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2360253
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:EE Journal/Magazine Articles

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