Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 37,
  • Issue 3,
  • pp. 1000-1007
  • (2019)

Reconfigurable Mode (De) Multiplexer via 3-D Triple-Waveguide Directional Coupler With Optical Phase Change Material

Not Accessible

Your library or personal account may give you access

Abstract

A three-dimensional reconfigurable mode (de) multiplexer (3DRM-(De)MUX) is proposed based on a triple-waveguide directional coupler with optical phase change material, which consists of an input waveguide on the upper layer, a bus waveguide on the lower layer, and an intermediate waveguide on the upper layer with a Ge2Sb2Se4Te1 (GSST) cap layer. The self-holding “off” and “on” states of the proposed 3DRM-(De)MUX can be switched by triggering the amorphous and crystalline states of GSST, respectively. The proposed 3DRM-(De)MUX is optimized by using the full-vectorial finite element method and 3-D full-vectorial finite difference time domain method. The simulated results show that the proposed 3DRM-(De)MUX for switching between the quasi-TE0 and quasi-TE1 modes is with a compact coupling length of only 12.0 μm, a broad bandwidth of 100 nm, the mode extinction ratios of 18.25 dB and 14.0 dB, and the insertion losses (ILs) of –0.38 and –1.14 dB for the “off” and “on” states, respectively. A more compact 3DRM-(De)MUX can also be achieved for the quasi-TM1 mode with the coupling length of 8.28 μm, IL of –0.12 dB (–1.98 dB), and mode crosstalk of –16.37 dB (–13.23 dB) for the “off” (“on”) state, respectively. The proposed 3DRM-(De)MUX can be applied in 3-D on-chip mode division multiplexing networks for flexible mode routing and switching.

© 2018 IEEE

PDF Article
More Like This
Efficient 3D silicon mode (de)multiplexer based on a sidewall-aligned vertical coupler

Xinguo Wang, Jinye Miao, Fangyuan Cheng, and Weifeng Jiang
Appl. Opt. 59(20) 5924-5929 (2020)

Compact and low-crosstalk mode (de)multiplexer using a triple plasmonic-dielectric waveguide-based directional coupler

Weifeng Jiang, Fangyuan Cheng, Ji Xu, and Hongdan Wan
J. Opt. Soc. Am. B 35(10) 2532-2540 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved