DocumentCode :
112690
Title :
All-Fiber Acousto-Optic Tunable Bandpass Filter Based on a Lateral Offset Fiber Splicing Structure
Author :
Hao Zhang ; Shouxin Kang ; Bo Liu ; Hongguang Dong ; Yinping Miao
Author_Institution :
Key Lab. of Opt. Inf. Sci. & Technol., Nankai Univ., Tianjin, China
Volume :
7
Issue :
1
fYear :
2015
fDate :
Feb. 2015
Firstpage :
1
Lastpage :
12
Abstract :
An all-fiber acousto-optic tunable bandpass filter has been proposed and experimentally demonstrated by fabricating a lateral offset fiber splicing structure between the lead-in single-mode fiber and acoustic fiber grating. In the presence of acoustic fiber grating that enables the coupling between the antisymmetric cladding modes and symmetric fundamental core mode, the proposed bandpass filter shows a broadband tunable wavelength range up to 152.9 nm with a wavelength tuning sensitivity of -206.07 nm/MHz through adjusting the acoustic frequency. Further experimental results indicate that by using HF acid to etch part of the fiber cladding, the largest tunable bandpass wavelength range could be expanded to 210.2 nm with an improved wavelength tuning sensitivity of -256.89 nm/MHz. Moreover, by adjusting the applied RF signal voltage, a dynamic peak transmission range in a magnitude of ~10 dB have been experimentally achieved.
Keywords :
acousto-optical filters; band-pass filters; optical fibre cladding; optical fibre fabrication; optical fibre filters; splicing; HF acid etching; acoustic fiber grating; all-fiber acousto-optic tunable bandpass filter; antisymmetric cladding modes; dynamic peak transmission range; fiber cladding; lateral offset fiber splicing structure; lead-in single-mode fiber; symmetric fundamental core mode; wavelength tuning sensitivity; Acoustics; Band-pass filters; Fiber gratings; Optical fiber amplifiers; Resonant frequency; Splicing; Acousto-optic tunable filter (AOTF); acoustic fiber grating; acoustic fiber grating, offset fiber splicing; acousto-optic tunable filter (AOTF); offset fiber splicing; optical bandpass filter;
fLanguage :
English
Journal_Title :
Photonics Journal, IEEE
Publisher :
ieee
ISSN :
1943-0655
Type :
jour
DOI :
10.1109/JPHOT.2014.2387257
Filename :
7001076
Link To Document :
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