Analog Signal Transmission in a High-Contrast-Gratings-Based Hollow-Core-Waveguide

作者：Huang H^*; Yue Y; Zhang L; Chase C; Parekh D; Sedgwick F; Wu M C; Chang Hasnain C J; Tur M; Willner A E

来源：Journal of Lightwave Technology, 2012, 30(23): 3640-3646.

DOI：10.1109/JLT.2012.2224844

• Dynamic range
• harmonic distortion
• intermodulation distortion
• microwave photonics
• integrated optical waveguides

In this paper, the performance of an on-chip hollow-core-waveguide (HW) using high-contrast gratings (HCG) for analog signal transmission is analyzed numerically. Simulation results indicate that after propagating 100 m in a HCG-HW with optimally designed parameters, there is very little degradation of either third-order intermodulation distortion spur-free dynamic range (IM3 SFDR) or third-order harmonic distortion (THD) SFDR. Due to the chromatic dispersion of the HCG-HW, the highest second-order harmonic distortion (SHD) SFDR is limited to 107.3 dB Hz(1/2). In addition, >100 dB.Hz(2/3) SFDR can be achieved over a radio frequency (RF) range of 80 GHz and an optical wavelength bandwidth of 50 nm after propagation 100 m through a HCG-HW. The parameter dependence of the waveguide performance is also investigated. With a +/- 20nm variation on all parameters, the propagation length in an HCG-HW is limited to similar to 6m in order to maintain an IM3 SFDR of >100 dB Hz(2/3.)

• 出版日期2012-12-1