Broadband SOI grating coupler based on sub-wavelength gratings with low back reflection for fiber-to-chip coupling of DWDM signals

Neha Purwaha; Cem Bonfil; Ahmad Atieh; Sahar Sargheini; Winnie N. Ye

doi:10.1117/12.2510384

4 March 2019 Broadband SOI grating coupler based on sub-wavelength gratings with low back reflection for fiber-to-chip coupling of DWDM signals

Neha Purwaha, Cem Bonfil, Ahmad Atieh, Sahar Sargheini, Winnie N. Ye

Author Affiliations +

Proceedings Volume 10921, Integrated Optics: Devices, Materials, and Technologies XXIII; 1092129 (2019) https://doi.org/10.1117/12.2510384
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A design of a broadband and high-efficiency SOI grating coupler (GC) for the TE mode is demonstrated. The periodic segments of the GC use Subwavelength Gratings (SWGC), where the width of the silicon segments is much smaller than the operating wavelengths and the width varies along the length of the GC. The SWGC is optimized for TE polarization with a peak CE of–4.5 dB at a wavelength of 1550 nm, with a 1-dB bandwidth of 68 nm ranging from 1521.4 nm to 1589.4 nm and a 3-dB bandwidth of 119 nm from 1497.4 nm to 1616.4nm. The back reflections in the SWGC are suppressed to - 22 dB. The broadband SWGC is integrated with cascaded ring resonators to demultiplex the incoming DWDM signal into individual channels and distribute them into sub-circuits. A layout of the GCs and ring resonators is generated, and systemlevel performance is evaluated.

Citation Download Citation

Neha Purwaha, Cem Bonfil, Ahmad Atieh, Sahar Sargheini, and Winnie N. Ye "Broadband SOI grating coupler based on sub-wavelength gratings with low back reflection for fiber-to-chip coupling of DWDM signals", Proc. SPIE 10921, Integrated Optics: Devices, Materials, and Technologies XXIII, 1092129 (4 March 2019); https://doi.org/10.1117/12.2510384

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Dense wavelength division multiplexing

Photonic integrated circuits

Resonators

Waveguides

Demultiplexers

Silicon

Fiber couplers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years