Abstract

The stationary wave integrated Fourier transform spectrometer (SWIFTS) is based on the sampling of a stationary wave using nano-scattering centers on the surface of a channel waveguide. Single nano-scale scattering centers above the waveguide surface will radiate the sampled signal with wide angular distribution, which is not compatible with the buried detection area of infrared (IR) detectors, resulting in crosstalk between pixels. An implementation of multiple diffraction nano-grooves (antenna) for each sampling center is proposed as an alternative solution to improve directivity towards the detector pixel by narrowing the scattering angle of the extracted light. Its efficiency is demonstrated from both simulated and measured far-field radiative patterns exhibiting a promising method to be used for the future integrated IR-SWIFTS.

© 2019 Optical Society of America

Near IR stationary wave Fourier transform lambda meter in lithium niobate: multiplexing and improving optical sampling using spatially shifted nanogroove antenna

Myriam Bonduelle, Irene Heras, Alain Morand, Gwenn Ulliac, Roland Salut, Nadege Courjal, and Guillermo Martin
Appl. Opt. 60(19) D83-D92 (2021)

Excitation of whispering gallery modes with a “point-and-play,” fiber-based, optical nano-antenna

Jonathan M. Ward, Fuchuan Lei, Stephy Vincent, Pooja Gupta, Samir K. Mondal, Jochen Fick, and Síle Nic Chormaic
Opt. Lett. 44(13) 3386-3389 (2019)

On-chip Fourier transform spectrometer on silicon-on-sapphire

Elham Heidari, Xiaochuan Xu, Chi-Jui Chung, and Ray T. Chen
Opt. Lett. 44(11) 2883-2886 (2019)

Nano-antenna enhanced waveguide integrated light source based on an MIS tunnel junction

Baohu Huang, Siping Gao, Yan Liu, Jian Wang, Zhenguo Liu, Yongxin Guo, and Weibing Lu
Opt. Lett. 44(9) 2330-2333 (2019)

On-chip Fourier transform spectrometers by dual-polarized detection

Huijie Wang, Zhongjin Lin, Qifeng Li, and Wei Shi
Opt. Lett. 44(11) 2923-2926 (2019)