Tunable Filters Based on Cascaded Long-Period Polymer Waveguide Gratings

被引：1
|
作者：
Shi, Xin [1 ]
Cao, Rui [1 ]
Wang, Lingfang [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, Chengdu 611731, Peoples R China
来源：
PHOTONIC SENSORS | 2022年 / 12卷 / 04期
关键词：
Long-period waveguide grating; optical waveguide; mode coupling; filter; BANDPASS FILTER; MODE;
D O I：
10.1007/s13320-022-0659-4
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Long-period waveguide grating based filters have attracted attention due to their flexible fabrication, a variety of materials and structures, low back reflection, low insertion loss, and excellent performance in the tuning range and temperature sensitivity. To our knowledge, for the first time, a two-segment polymer long-period waveguide grating was cascaded to implement a filter with a narrower bandwidth. Experimental results showed that the device had a maximum extinction ratio of 24 dB at 1 577 nm, and the 12 dB bandwidth was 10 nm. The temperature sensitivity of the fabricated device was 1.79 nm/degrees C.
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收藏
页数：6
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