期刊
OPTICS LETTERS
卷 36, 期 2, 页码 271-273出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.000271
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资金
- National Natural Science Foundation of China (NSFC) [90922030, 10804055, 10904078, 10804054, 10904077]
- 111 Project [B07013]
- Ministry of Education of China [708022]
- 973 Program [2007CB307002, 2010CB934101]
- Chinese National Key Basic Research Special Fund [2011CB922003]
- Fundamental Research Funds for the Central Universities
We report a type of all-fiber acousto-optic tunable notch filter consisting of a cuneal acoustic transducer and a fiber winding of four unjacketed single-mode fibers. With -32 dB peak rejection efficiency and 178 nm tunable range of the central wavelength, all of the tunable characteristics of the all-fiber acousto-optic tunable filter are kept. In addition, the structure is versatile and convenient for use in building other complicated filters. As an example, a coarse comblike filter has been built by adjusting the axial strains of the unjacketed fibers. (C) 2011 Optical Society of America
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