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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页数：6

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