Analysis and fabrication of broadband add/drop filters using a Bragg grating-assisted mismatched coupler

L. Y Fan; J. Li; W. W. Jiang; J. J. Zheng; Z. M. Liu; S. S. Jian

doi:10.1117/12.851565

1 December 2009 Analysis and fabrication of broadband add/drop filters using a Bragg grating-assisted mismatched coupler

L. Y Fan, J. Li, W. W. Jiang, J. J. Zheng, Z. M. Liu, S. S. Jian

Author Affiliations +

Proceedings Volume 7630, Passive Components and Fiber-based Devices VI; 763011 (2009) https://doi.org/10.1117/12.851565
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

The unified coupled-mode formalism derived from Maxwell's equation is employed to analyze the add/drop filters using a Bragg grating assisted mismatched coupler. By writing a linearly chirped Bragg grating over the uniform coupling region of the coupler, a filter with maximum reflectivity and 3dB bandwidth at the drop port about 20 dB and 0.8 nm, respectively, is obtained. The experimentally measured results are in good agreement with the numerical calculations. A broadband add/drop filter using a Bragg grating-assisted mismatched coupler can be obtained by writing a linearly chirped Bragg grating over the uniform coupling region of the coupler.

Citation Download Citation

L. Y Fan, J. Li, W. W. Jiang, J. J. Zheng, Z. M. Liu, and S. S. Jian "Analysis and fabrication of broadband add/drop filters using a Bragg grating-assisted mismatched coupler", Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 763011 (1 December 2009); https://doi.org/10.1117/12.851565

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