The design of graphene-based electro-absorption modulator

Heyang Guoyu; Weiping Wang; Jun Cao; Xiaoyan Hu; Ying Huang

doi:10.1117/12.2627452

27 March 2022 The design of graphene-based electro-absorption modulator

Heyang Guoyu, Weiping Wang, Jun Cao, Xiaoyan Hu, Ying Huang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 12169DF (2022) https://doi.org/10.1117/12.2627452
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

The graphene-based silicon modulator can benefit from the outstanding optical and electrical properties of graphene which makes this kind of modulator a potential candidate for applications such as optical communication and optical interconnect which have strict performance requirements, like broadband operation, low optical loss, low-cost and high speed. In this work, a graphene-based high speed electro-absorption modulator is constructed. Firstly, a typical graphene-oxide-silicon (GOS) structure modulator with one-layer graphene is designed and simulated. The mode field distribution and single mode loss is simulated. Secondly, in order to improve the performance of the graphene-based modulator, the structure of the modulator is optimized. Instead of one-layer graphene, two layers are used. By adjusting the position of graphene in the structure of modulator, a graphene-oxide-graphene (GOG) structure modulator is designed. The structures of graphene layers on top of the silicon-based waveguide and graphene layers sandwiched between two silicon-based waveguides are designed, and the latter one is chosen because it has the advantage of stronger interaction between graphene and light field. By simulation, the extinction ratio of this proposed modulator is as high as 15 dB, and the modulation depth is about 93.3%. The operation bandwidth is calculated to be 52 GHz with low insertion loss of 1.55 dB.

Citation Download Citation

Heyang Guoyu, Weiping Wang, Jun Cao, Xiaoyan Hu, and Ying Huang "The design of graphene-based electro-absorption modulator", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 12169DF (27 March 2022); https://doi.org/10.1117/12.2627452

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