Journal ArticleDOI
Ultra-Broadband and Compact Two-Mode Multiplexer Based on Subwavelength-Grating-Slot-Assisted Adiabatic Coupler for the Silicon-on-Insulator Platform
Luhua Xu,Maxime Jacques,David V. Plant,Yun Wang,Deng Mao,Jinsong Zhang,Zhenping Xing,Eslam El-Fiky,Ghulam Saber,Amar Kumar,Yannick D'Mello +10 more
TLDR
In this paper, a two-mode multiplexer based on subwavelength-grating-slot-assisted adiabatic coupler for the silicon-on-insulator platform is proposed.Abstract:
We design and experimentally demonstrate an ultra-broadband and compact two-mode multiplexer based on subwavelength-grating-slot-assisted adiabatic coupler for the silicon-on-insulator platform. The introduction of subwavelength-grating slot effectively increases the refractive index of the gap region between two strip waveguides and enhances the coupling between them, leading to high modal transmission over a short mode-evolution region, particularly at the short-wavelength regime. As a result, our two-mode multiplexer has a compact design footprint, with a mode-evolution region length of only 25 $\mu$ m and an entire device length of only 55 $\mu$ m. Simulation shows that the mode-division multiplexing (MDM) link formed by the designed two-mode multiplexers has a record bandwidth of 740 nm spanning from 1260 nm to 2000 nm, where the crosstalk is lower than −18.5 dB and the insertion loss (IL) is lower than 0.32 dB. The MDM link has been fabricated using electron beam lithography and achieves measured crosstalk lower than −18.8 dB and IL lower than 2.6 dB, over a 100 nm bandwidth from 1260 nm to 1360 nm that covers the O-band and a 130 nm bandwidth from 1500 nm to 1630 nm that covers the C-band and the L-band.read more
Citations
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Journal ArticleDOI
A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials
Journal ArticleDOI
Subwavelength structured silicon waveguides and photonic devices
TL;DR: In this article, a review of various approaches used to design subwavelength structures and achieve exotic optical responses and discuss how these structures can be used to realize high-performance silicon photonic devices.
Journal ArticleDOI
Compact and Broadband Edge Coupler Based on Multi-Stage Silicon Nitride Tapers
TL;DR: In this article, an ultra-compact and broadband silicon nitride edge-coupler that enables high coupling efficiency was realized by concatenating short tapers in four stages, whose angles were designed to minimize the footprint while preserving the coupling efficiency.
Journal ArticleDOI
Scalable Two-Mode 3-Port and 4-Port Mode Insensitive Silicon Photonic Switches
TL;DR: In this article, the authors proposed a scalable 3-port and 4-port mode insensitive multimode switching matrices for the first two quasi-transverse electric (TE) modes.
Journal ArticleDOI
Broadband Silicon Four-Mode (De)Multiplexer Using Subwavelength Grating-Assisted Triple-Waveguide Couplers
TL;DR: In this paper, a broadband silicon four-mode (de)multiplexer (De)MUX is proposed and experimentally demonstrated based on subwavelength gratings (SWGs)-assisted triple-waveguide couplers (TWCs).
References
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Journal ArticleDOI
WDM-compatible mode-division multiplexing on a silicon chip
Lian-Wee Luo,Noam Ophir,Christine P. Chen,Lucas H. Gabrielli,Carl B. Poitras,Keren Bergmen,Michal Lipson +6 more
TL;DR: This work shows the first microring-based demonstration of on-chip WDM-compatible mode-division multiplexing with low modal crosstalk and loss, which can potentially increase the aggregate data rate by many times for on- chip ultrahigh bandwidth communications.
Journal ArticleDOI
Waveguide sub-wavelength structures: a review of principles and applications
Robert Halir,Przemek J. Bock,Pavel Cheben,Alejandro Ortega-Moñux,Carlos Alonso-Ramos,Jens H. Schmid,Jean Lapointe,Dan-Xia Xu,J. Gonzalo Wangüemert-Pérez,Íñigo Molina-Fernández,Siegfried Janz +10 more
TL;DR: Sub-wavelength structures with a subwavelength pitch have been known since Hertz conducted his first experiments on the polarization of electromagnetic waves as discussed by the authors, and their applications include anti-reflective coatings, polarization rotators, high-efficiency fiber-chip cou-plers, spectrometers, highreflectivity mirrors, athermal waveg- uides, multimode interference couplers.
Journal ArticleDOI
On-chip two-mode division multiplexing using tapered directional coupler-based mode multiplexer and demultiplexer
TL;DR: A novel on-chip two-mode division multiplexing circuit using a tapered directional coupler-based TE(0)&TE(1) mode multiplexer and demultiplexer on the silicon-on-insulator platform is demonstrated.
Journal ArticleDOI
Silicon mode (de)multiplexer enabling high capacity photonic networks-on-chip with a single-wavelength-carrier light
TL;DR: A fabricated mode (de)multiplexer with cascaded asymmetrical directional couplers with low excess loss as well as low crosstalk over a broad wavelength range (~20 nm) is demonstrated experimentally.
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