Laser & Optoelectronics Progress, Volume. 47, Issue 3, 30603(2010)
Experimental Fabrication of Bragg Grating-Assisted Mismatched Coupler for Add/Drop Filters
All-fiber add/drop filters are the key components in fiber communication systems. The Bragg grating assisted mismatched coupler for add/drop filter is not interferometric,easy to fabricate and works stable. The filter is based on 248 nm ultraviolet-written Bragg grating in 2×2 coupler fused with a standard single mode fiber and a self-made high germanium doped photosensitive fiber. The filter with maximum reflectivity about 20 dB,bandwidth about 2 nm is obtained. Filters with big maximum reflectivity and long bandwidth can be obtained by writing chirped Bragg grating on the uniform region of the coupler or writing Bragg grating on the non-uniform region of the coupler.
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Fan Linyong, Li Jian, Jiang Weiwei, Liu Zhiming, Zheng Jingjing, Jian Shuisheng. Experimental Fabrication of Bragg Grating-Assisted Mismatched Coupler for Add/Drop Filters[J]. Laser & Optoelectronics Progress, 2010, 47(3): 30603
Category: Fiber Optics and Optical Communications
Received: Aug. 2, 2009
Accepted: --
Published Online: Feb. 8, 2010
The Author Email: Linyong Fan (skillfan@163.com)