Complementary metal-oxide-semiconductor imaging array with laser Doppler blood flow processing

Chayut Kongsavatsak; Diwei He; Barrie R. Hayes-Gill; John A. Crowe; Steve P. Morgan

doi:10.1117/1.2993318

Abstract

A fully integrated complementary metal-oxide-semiconductor 16×1 linear photodetector array with on-chip signal processing for applications in laser Doppler blood flow imaging has been designed and tested. Analog circuitry is used to provide the transimpedance amplifier, amplification of the modulated (ac) component, and antialiasing filter at each pixel, and also multiplexing of the 16 pixels. Digital signal processing is used to implement the lowpass, bandpass, and frequency-weighted filters, along with the signal averaging conventionally implemented as discrete components in laser Doppler blood flow imaging. The sensor demonstrates good agreement with simulation at each design stage. The measured optical performance of the array is demonstrated using modulated light signals and a vibrating test structure. As the first iteration of the chip, this 16×1 linear array provides an opportunity to evaluate the feasibility of full-field laser Doppler blood flow imaging with on-chip processing, with a view to providing a design that is scalable to a larger linear array or 2-D imaging array.

Citation Download Citation

Chayut Kongsavatsak, Chayut Kongsavatsak, Diwei He, Diwei He, Barrie R. Hayes-Gill, Barrie R. Hayes-Gill, John A. Crowe, John A. Crowe, Steve P. Morgan, Steve P. Morgan, } "Complementary metal-oxide-semiconductor imaging array with laser Doppler blood flow processing," Optical Engineering 47(10), 104401 (1 October 2008). https://doi.org/10.1117/1.2993318 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years