Optical switching of HTS band reject resonators

Author

Soares, E.R. ; Raihn, K.F. ; Fenzi, N.O. ; Matthaei, G.L.

Author_Institution

Superconductor Technol. Inc., Santa Barbara, CA, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2276

Lastpage

2278

Abstract

A method for optically switching HTS (High Temperature Superconducting) band reject resonators is presented. Fast low loss switching of HTS filter elements enable digital selecting of arbitrary pass bands and stopbands. Each switch element must preserve the high Q of the HTS filter element in one switch state, and remove the HTS filter element without adding loss in the other state. Patterned pieces of GaAs are used as the switch. Fiber optic cabling is used to bring the optical energy to the cryogenic package. This minimizes the thermal loading of the filter package. Cryogenic switching of a single resonator is discussed, as well as integration of the switching method to entire filters and banks of fibers. Measured and modeled data are compared.<>

Keywords

band-stop filters; cryogenic electronics; gallium arsenide; high-temperature superconductors; optical switches; passive filters; photoconducting switches; superconducting resonators; GaAs; HTS band reject resonators; HTS filter elements; HTSC; cryogenic package; cryogenic switching; fast low loss switching; fiber optic cabling; high temperature superconductor; optical switching; Band pass filters; High temperature superconductors; Optical fiber cables; Optical fiber filters; Optical filters; Optical losses; Optical resonators; Optical switches; Resonator filters; Superconducting filters;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403039

Filename

403039