Single-mode waveguide microcavity for fast optical switching

We investigate the properties of a tunable single-mode waveguide microcavity that is well suited for frequency modulation and switching. The cavity mode has a volume of less than one cubic half-wavelength, and the resonant frequency is tuned by refractive-index modulation. We suggest using a photore...

Full description

Saved in:
Bibliographic Details
Published inOptics letters Vol. 21; no. 24; p. 2017
Main Authors Villeneuve, P R, Abrams, D S, Fan, S, Joannopoulos, J D
Format Journal Article
LanguageEnglish
Published United States 15.12.1996
Online AccessGet more information

Cover

More Information
Summary:We investigate the properties of a tunable single-mode waveguide microcavity that is well suited for frequency modulation and switching. The cavity mode has a volume of less than one cubic half-wavelength, and the resonant frequency is tuned by refractive-index modulation. We suggest using a photorefractive effect to drive the device, based on the photoionization of deep donor levels known as DX centers in compound semiconductors. Picosecond on-off switching times are achievable when two of these cavities are placed in series. The resulting switch has the advantages of being compact and requiring as little as 10 pJ of energy of operate.
ISSN:0146-9592
DOI:10.1364/OL.21.002017