Chinese Optics Letters, 2016, 14 (10): 101301, Published Online: Aug. 2, 2018
Analysis of an integrated tunable spectrometer for the short to mid-infrared range based on a ring resonator Download: 912次
130.7408 Wavelength filtering devices 130.3120 Integrated optics devices 130.3990 Micro-optical devices 140.4780 Optical resonators
Abstract
An integrated, tunable spectrometer based on a silicon-on-sapphire platform is designed at wavelengths of 2.29–2.35 μm. Its pivotal component is a 4.7 μm-radius ring resonator on a graphene monolayer. Its full width at half-maximum and free spectral range are ~ 1.5 and ~ 45 nm , respectively, as found through a numerical simulation and theoretical computation. Sixteen characteristic peaks are obtained by tuning the Fermi level of graphene. The gap between the ring and waveguides is increased by 0.5 μm to increase the resolution, and though this can drastically reduce the transmission rate, an upper sapphire layer maintains light to the drop port.
Jie Huang, Junbo Yang, Hailiang Zhang, Hongqing Wang, Wenjun Wu, DingBo Chen, Shengli Chang. Analysis of an integrated tunable spectrometer for the short to mid-infrared range based on a ring resonator[J]. Chinese Optics Letters, 2016, 14(10): 101301.