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Apodized long‐period grating with low insertion loss
Author(s) -
Yang Xiufeng,
Guo Xin,
Lu Chao,
Hiang Cheng Tee
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10583
Subject(s) - apodization , insertion loss , optics , grating , flattening , materials science , microwave , wavelength , physics , telecommunications , engineering , composite material
The characteristics of an apodized long‐period grating are studied experimentally and theoretically. It has no side‐lobes and almost zero insertion loss in the pass band. Changing the dc and maximum ac index along the z direction of LPG can conveniently control wavelength and the value of peak loss. Suitable spectral profile of gain‐flattening filter with low insertion loss is obtained by writing two or three consecutive apodized sub‐gratings in one fiber with the different UV power level in the second exposure. The experiment results are in good agreement with the simulation results. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 283–286, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10583