Photonic Sensors, Volume. 12, Issue 4, 220415(2022)
Tunable Filters Based on Cascaded Long-Period Polymer Waveguide Gratings
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/℃.
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Xin SHI, Rui CAO, and Lingfang WANG. Tunable Filters Based on Cascaded Long-Period Polymer Waveguide Gratings[J]. Photonic Sensors, 2022, 12(4): 220415
Category: Regular
Received: Apr. 15, 2021
Accepted: Jan. 9, 2022
Published Online: Mar. 11, 2023
The Author Email: WANG and Lingfang (lf.wang@uestc.edu.cn)