Bending and Strain Sensitivities in a Helicoidal Long-Period Fiber Gratings

Title
Bending and Strain Sensitivities in a Helicoidal Long-Period Fiber Gratings
Authors
정호중신우진김준기박승한고도경이종민오경환
Issue Date
2009-09
Publisher
IEEE photonics technology letters
Citation
VOL 21, NO 17-1234
Abstract
In this letter, we report bending and strain sensitivities of helicoidal long- period fiber gratings fabricated by twisting single- mode fibers during CO2 laser irradiation. Linear spectral shifts of the resonant wavelengths under the bending and tensile strain were observed with the sensitivities of 11.7 nm/m(-1) and 1.1 pm/mu epsilon, respectively. The corresponding transmission power variations at the resonance wavelength were 4.1 dB/m(-1) and 2.2 x 10(-4) dB/mu epsilon, respectively. Detailed measurement techniques and sensor applications are discussed.
URI
http://pubs.kist.re.kr/handle/201004/69276
ISSN
1041-1135
Appears in Collections:
KIST Publication > Article
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