Electrooptic properties of InGaAsP-based asymmetric double quantum well electroabsorption modulators

Dong Kwon Kim; D. S. Citrin

doi:10.1117/12.742924

19 November 2007 Electrooptic properties of InGaAsP-based asymmetric double quantum well electroabsorption modulators

Dong Kwon Kim, D. S. Citrin

Proceedings Volume 6782, Optoelectronic Materials and Devices II; 67820D (2007) https://doi.org/10.1117/12.742924
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

Abstract

Theoretical calculations of the optical properties of InGaAsP quantum well (QW) electroabsorption modulators (EAM's) operating at c-band (~1550 nm wavelength) is presented. Absorption coefficients of QW's are obtained from the linear optical susceptibility. Excitons are calculated in momentum space, which includes valence-band mixing, mixing of excitons originating in different subband pairs, and exciton spin-related optical selection rules. Various line-broadening mechanisms relevant to InGaAsP-QW's are also included. Investigations on asymmetric double QW's (ADQW's) show that the small-signal modulation efficiency, which is an important figure of merit for analog application, can be enhanced significantly at substantially reduced operating bias voltage. Simple optimization of ADQW band structure results in a maximum slope efficiency ~3.8 times larger than that of SQW EAM's at a reduced operating bias field of 34 kV/cm compared with ~70 kV/cm for comparable SQW's.

Citation Download Citation

Dong Kwon Kim and D. S. Citrin "Electrooptic properties of InGaAsP-based asymmetric double quantum well electroabsorption modulators", Proc. SPIE 6782, Optoelectronic Materials and Devices II, 67820D (19 November 2007); https://doi.org/10.1117/12.742924

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