Abstract

We propose an off-axis meta-lens-based optical wavelength demultiplexer. The performance of the device initially proposed with four output channels (1527–1596 nm, channel spacing 23 nm) composed of an optical fiber array is analyzed by both scalar diffraction theory and ray tracing method. The results show that the fiber energy coupling efficiency of the demultiplexer could be larger than 89% and the channel bandwidth is about 9 nm. Influences of the two key parameters, focal length $f$ and off-axis angle $\alpha$, are also investigated. We find that the minimum spectral linewidth of the channel is inversely proportional to the sine of $\alpha$ and nearly independent of $f$ for a meta-lens with large $F$-number ($F>5$), while the effective spectral range is negatively (positively) dependent on $\alpha$ ($f$). These results are significant in guiding us to build small and compact demultiplexing devices for optical telecommunication.

© 2017 Optical Society of America

Simultaneous dual-wavelength off-axis flipping digital holography

Lei Liu, Mingguang Shan, Zhi Zhong, Bin Liu, Gunagyu Luan, Ming Diao, and Yabin Zhang
Opt. Lett. 42(21) 4331-4334 (2017)

Integrated all-optical MIMO demultiplexer for mode- and wavelength-division-multiplexed transmission

Daniele Melati, Andrea Alippi, Andrea Annoni, Nicola Peserico, and Andrea Melloni
Opt. Lett. 42(2) 342-345 (2017)

Computational simulation of multi-wavelength light-field thermometry based on a chromatic meta-lens

Yulun He, Shengxian Shi, Chunhui Yao, Zhou Zhao, Mu Ku Chen, and Fei Qi
Opt. Lett. 49(4) 961-964 (2024)

Design of an off-axis near-eye AR display system based on a full-color freeform holographic optical element

Yongdong Wang, Tong Yang, Dongwei Ni, Dewen Cheng, and Yongtian Wang
Opt. Lett. 48(5) 1288-1291 (2023)

Six-pack off-axis holography

Moran Rubin, Gili Dardikman, Simcha K. Mirsky, Nir A. Turko, and Natan T. Shaked
Opt. Lett. 42(22) 4611-4614 (2017)