Experimental Fabrication of Bragg Grating-Assisted Mismatched Coupler for Add/Drop Filters

Linyong, 范林勇 Fan; Jian, 李坚 Li; Weiwei, 江微微 Jiang; Zhiming, 刘志明 Liu; Jingjing, 郑晶晶 Zheng; Shuisheng, 简水生 Jian

doi:10.3788/lop47.030603

激光与光电子学进展

2010

DOI: 10.3788/lop47.030603

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Experimental Fabrication of Bragg Grating-Assisted Mismatched Coupler for Add/Drop Filters

范林勇 Fan Linyong¹,

李坚 Li Jian²,

江微微 Jiang Weiwei³

et al.

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2012

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Influences on the bandwidth at the drop port of the add/drop filter using a fiber grating coupler by uniform and linearly chirped fiber Bragg grating

Jiang

Zhao

et al. 2012

Sci. China Inf. Sci.

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Writing a fiber Bragg grating (FBG) in an optical fiber coupler is a very effective way to implement an optical add/drop filter (OADF). In order to analyze the influences on the bandwidth at the drop port of the OADF using fiber grating-assisted mismatched coupler, a uniform FBG and a linearly chirped FBG were written on the coupler, and two different OADFs were fabricated. The fiber grating is written in a 2×2 mismatched coupler, which is fused and tapered with a standard single mode fiber (SMF) and a high germanium doped photosensitive fiber, by using a 248 nm ultraviolet laser. For the OADF using the uniform FBG, the 3 dB and 20 dB bandwidths are 0.1 nm and 0.3 nm, respectively; for the OADF using the linear chirped FBG, the 3 dB and 20 dB bandwidths are 0.8 nm and 2 nm, respectively. The experimental results meet the theoretical analysis well. The bandwidth at the drop port of the device can be adjusted by adjusting the chirped coefficient of the linearly chirped FBG. Keywords optical add/drop filter, fiber Bragg grating, coupler, optical fiber communication Citation Fan L Y, Jiang W W, Zhao R F, et al. Influences on the bandwidth at the drop port of the add/drop filter using a fiber grating coupler by uniform and linearly chirped fiber Bragg grating.

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Influences on the bandwidth at the drop port of the add/drop filter using a fiber grating coupler by uniform and linearly chirped fiber Bragg grating

Jiang

Zhao

et al. 2012

Sci. China Inf. Sci.

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show abstract

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Experimental Fabrication of Bragg Grating-Assisted Mismatched Coupler for Add/Drop Filters

Cited by 1 publication

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Influences on the bandwidth at the drop port of the add/drop filter using a fiber grating coupler by uniform and linearly chirped fiber Bragg grating

Influences on the bandwidth at the drop port of the add/drop filter using a fiber grating coupler by uniform and linearly chirped fiber Bragg grating

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