Qiang Mao, Xionggui Tang, Fang Meng, Ming Chen, Shan Liang. Tunable Narrow-Band Filter with Sub-Wavelength Grating Structure by Micro-Optofluidic Technique[J]. Laser & Optoelectronics Progress, 2019, 56(4): 042301
- Laser & Optoelectronics Progress
- Vol. 56, Issue 4, 042301 (2019)
Fig. 1. Structural diagram of the tunable filter. (a) 3D structure; (b) top view; (c) cross section
Fig. 2. Transmission spectrum and FWHM of transmission peak versus refractive index of micro-fluid. (a) Transmission spectrum; (b) FWHM of transmission peak
Fig. 3. Central wavelength of transmission spectrum versus refractive index of micro-fluid
Fig. 4. Transmission spectrum versus structural parameters of device. (a) Grating gap distance w; (b) grating depth H; (c) grating period T
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