A tunable nano-optofluidic polymer optical filter based on guided-mode resonance

Xiao, Guohui and Zhu, Qiangzhong and Shen, Yang and Li, Kezheng and Liu, Mingkai and Zhuang, Qiandong and Jin, Chongjun (2015) A tunable nano-optofluidic polymer optical filter based on guided-mode resonance. Nanoscale, 7 (8). pp. 3429-3434. ISSN 2040-3364

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Optical filters with reconfigurable spectral properties are highly desirable in a wide range of applications. We propose and experimentally demonstrate a tunable submicro-optofluidic polymer guided-mode resonance (PGMR) filter. The device is composed of a periodic grating sandwiched between a high index waveguide layer and a low index capping layer, which integrates submicro-fluidic channel arrays and a PGMR filter elegantly. A finite difference time domain (FDTD) method is employed to understand the spectral properties and determine appropriate device parameters. We fabricated the polymer guided-mode resonance filter with a method combining two-beam interference lithography, floating nanofilm transfer and thermal bonding techniques. Experimental results show that our tunable submicro-optofluidic PGMR filters can provide a broad spectral tuning range (13.181 nm), a narrow bandwidth (<2.504 nm), and a high reflection efficiency (>85%) in the visible region. Such submicro-optofluidic PGMR filters are highly compatible with existing nano/microfluidic technologies and would be valuable for the integrated flexible optical system.

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20 Aug 2015 13:14
Last Modified:
20 Sep 2023 00:45