Share Email Print
cover

Proceedings Paper

Photo-response of integrated photonic crystal-photodiode micro-electro-optic filters
Author(s): Ying Wang; Jin Hyoung Lee; Tomoko Borsa; Park Wounjhang; Bart Van Zeghbroeck
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A novel micro-electro-optic filter formed by integrating photonic crystals with photodiodes on a silicon substrate is demonstrated in this paper. P-n diodes were fabricated on a Silicon wafer using standard processes. Reactive ion etching (RIE) was used to form trenches into the diodes to contain and position photonic crystals. The wafer was then immersed vertically into a slowly evaporating colloidal suspension of silica mircrospheres to assemble the photonic crystal over the photodiodes. Spectral measurements using a grating monochrometer confirmed that a dip exists in the photocurrent response of the photonic crystal filter-photodetectors at the predicted wavelength of 600 nm. We performed a series of measurements using several different sphere sizes and light incidence angles to further characterize the filters, and evaluated the use of device as a wavelength selective detector. Since silica has a low coefficient of thermal expansion, the wavelength selective characteristics of the device are expected to be insensitive to ambient temperatures.

Paper Details

Date Published: 18 August 2005
PDF: 6 pages
Proc. SPIE 5931, Nanoengineering: Fabrication, Properties, Optics, and Devices II, 59310K (18 August 2005); doi: 10.1117/12.615317
Show Author Affiliations
Ying Wang, Univ. of Colorado, Boulder (United States)
Jin Hyoung Lee, Univ. of Colorado, Boulder (United States)
Tomoko Borsa, Univ. of Colorado, Boulder (United States)
Park Wounjhang, Univ. of Colorado, Boulder (United States)
Bart Van Zeghbroeck, Univ. of Colorado, Boulder (United States)


Published in SPIE Proceedings Vol. 5931:
Nanoengineering: Fabrication, Properties, Optics, and Devices II
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

© SPIE. Terms of Use
Back to Top