Materials, Photonic Devices, and Sensors

Fabricating phase-shifted fiber Bragg grating by simple postprocessing using femtosecond laser

[+] Author Affiliations
Xian Zhou, Yutang Dai, Fufei Liu, Minghong Yang

Wuhan University of Technology, National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan, China

Joseph Muna Karanja

Pwani University, School of Pure and Applied Sciences, Kilifi, Kenya

Opt. Eng. 56(2), 027108 (Feb 21, 2017). doi:10.1117/1.OE.56.2.027108
History: Received September 29, 2016; Accepted January 23, 2017
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Abstract.  Fabricating of phase-shifted fiber Bragg grating (PSFBG) by a femtosecond (fs) laser postprocessing of standard single mode fiber Bragg grating (FBG) without phase mask is demonstrated. A central region of grating is irradiated by an fs laser assisted with a rotating jig, which produces a π phase shift at the central region of the grating and forms a π phase-shifted FBG. The procedure is simple, fast, and has good reproductivity. The bandwidth of transmission peak of PSFBG grows with an increasing amount of laser energy or length of irradiation and decreasing of translation speed; the transmission loss decreases with increasing irradiation length. Additionally, the repeatability of fs postprocessing and temperature stability of PSFBG were investigated.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Xian Zhou ; Yutang Dai ; Joseph Muna Karanja ; Fufei Liu and Minghong Yang
"Fabricating phase-shifted fiber Bragg grating by simple postprocessing using femtosecond laser", Opt. Eng. 56(2), 027108 (Feb 21, 2017). ; http://dx.doi.org/10.1117/1.OE.56.2.027108


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