Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Clinical quality of breath-held T1-weighted breast MRI in the supine position.

European journal of radiology·2026

Same author

Low-loss plasmonic waveguide with high optical confinement on the thin-film lithium niobate-on-insulator (LNOI) platform.

Optics letters·2026

Same author

<math><semantics><mrow><msub><mi>T</mi> <mn>2</mn></msub></mrow> <annotation>$$ {\boldsymbol{T}}_{\mathbf{2}} $$</annotation></semantics></math> -Weighted Imaging of Water, Fat and Silicone.

Magnetic resonance in medicine·2026

Same author

Biomarkers.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Same author

Alzheimer's Imaging Consortium.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Same author

Integrated silicon elliptical ring modulator with ultra-high bandwidth beyond 110 GHz.

Optics letters·2025

Search research articles

Related Experiment Video

Updated: Apr 2, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

High coupling efficiency dual-wavelength band waveguide grating couplers.

Xuetong Zhou, Hon Ki Tsang

|April 1, 2026

Summary

We developed a high-efficiency dual-wavelength band waveguide grating coupler (DWBGC) for O-band and C-band light. This silicon photonics device efficiently couples light in opposite directions using a single grating without metal reflectors.

Area of Science:

Photonics and Optical Engineering
Materials Science

Background:

Waveguide grating couplers are essential for interfacing optical fibers with integrated photonic circuits.
Achieving efficient dual-wavelength operation in a single device presents significant design challenges.

Purpose of the Study:

To design and demonstrate a high-efficiency dual-wavelength band waveguide grating coupler (DWBGC).
To enable simultaneous coupling of O-band and C-band light into opposite directions using a single grating structure.

Main Methods:

Utilized an optimized shifted polysilicon overlay grating positioned above a conventional silicon grating.
Employed rigorous electromagnetic simulations to predict device performance.
Fabricated and experimentally validated the DWBGC performance.

More Related Videos

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Related Experiment Videos

Last Updated: Apr 2, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Main Results:

Simulated coupling efficiencies of -2.17 dB (O-band) and -1.65 dB (C-band) with 1 dB bandwidths of 30 nm and 40 nm, respectively.
Experimental results demonstrated coupling efficiencies of -2.79 dB (O-band) and -2.28 dB (C-band) with 1 dB bandwidths of 27 nm and 33 nm.
The DWBGC achieved high efficiency without bottom metal reflectors.

Conclusions:

The proposed DWBGC offers a high-efficiency solution for dual-wavelength coupling in silicon photonics.
The design is compatible with standard photolithography, facilitating large-scale manufacturing.
This technology is promising for applications requiring bidirectional dual-wavelength optical signal routing.