CMOS in-pixel optical pulse frequency modulator

Nicolaas E. Nel; M. du Plessis; T.-H. Joubert

doi:10.1117/12.2502455

24 January 2019 CMOS in-pixel optical pulse frequency modulator

Nicolaas E. Nel, M. du Plessis, T.-H. Joubert

Proceedings Volume 11043, Fifth Conference on Sensors, MEMS, and Electro-Optic Systems; 110430C (2019) https://doi.org/10.1117/12.2502455
Event: Fifth Conference on Sensors, MEMS, and Electro-Optic Systems, 2018, Skukuza, South Africa

Abstract

In this paper, a CMOS image detector array is presented that can convert a photocurrent generated by light falling onto a photodiode to a measurable output frequency. The designed array consists of 64 pixels, each containing an n⁺ -p⁺ /psubstrate photodiode along with all signal-to-frequency conversion circuitry. The 8x8 array was designed using the ams 350 nm process, with each individual pixel occupying an area of 30×30 μm² . Measurements on the fabricated array show that a dynamic range of 10 - 15 dB can be achieved with a maximum output frequency of 125 kHz. Work was done to increase the output driving capability of the array to increase the dynamic range of the pixel in simulations to 54 dB. Further research will also investigate ways of implem

Citation Download Citation

Nicolaas E. Nel, M. du Plessis, and T.-H. Joubert "CMOS in-pixel optical pulse frequency modulator", Proc. SPIE 11043, Fifth Conference on Sensors, MEMS, and Electro-Optic Systems, 110430C (24 January 2019); https://doi.org/10.1117/12.2502455

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