Modulation speed improvement in a Fabry-Perot thermo-optical modulator through a driving signal optimization technique

Francesco Giuseppe Della Corte; Massimo Merenda; Giuseppe Cocorullo; Mario Iodice; Ivo Rendina; Pasqualina M. Sarro

doi:10.1117/1.3183913

1 July 2009 Modulation speed improvement in a Fabry-Perot thermo-optical modulator through a driving signal optimization technique

Francesco Giuseppe Della Corte, Massimo Merenda, Giuseppe Cocorullo, Mario Iodice, Ivo Rendina, Pasqualina M. Sarro

Author Affiliations +

Optical Engineering, Vol. 48, Issue 7, 074601 (July 2009). https://doi.org/10.1117/1.3183913

Abstract

A three-power-level method for obtaining efficient thermo-optical modulation in an all-silicon waveguide-integrated Fabry-Perot thermo-optic modulator is discussed by means of a thermo-optical analytical model and demonstrated. The thermal system is represented as a two-pole model where, at every time, the temperature in the waveguide core is modified by means of a heater. This temperature is calculated and used in turn for calculating the refractive index. In this way, the impact of the driving signal shape on the device speed performance is assessed. Results clearly indicate that the application of a thermal bias holding the modulator at a higher average temperature with respect to the substrate heat sink allows increasing the modulator speed. An application-specific integrated circuit has been designed and developed in order to test the new modulation logic. The system's electronics is implemented in a 0.8 μm, 5 V, CMOS process. The experimental results of this new three-power-level driver method are reported, showing the shortening of the characteristic transient times.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Francesco Giuseppe Della Corte, Massimo Merenda, Giuseppe Cocorullo, Mario Iodice, Ivo Rendina, and Pasqualina M. Sarro "Modulation speed improvement in a Fabry-Perot thermo-optical modulator through a driving signal optimization technique," Optical Engineering 48(7), 074601 (1 July 2009). https://doi.org/10.1117/1.3183913

Published: 1 July 2009

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