Ion-exchange across a direct-bonded interface

Author

Gawith, C.B.E. ; Bhutta, T. ; Shepherd, David P. ; Hud, P. ; Ross, G.W. ; Smith, Peter G. R. ; Wang, Jiacheng

Author_Institution

Optoelectron. Res. Centre, Southampton Univ., UK

fYear

2000

fDate

7-12 May 2000

Firstpage

315

Lastpage

316

Abstract

Summary form only given. Presented are the results of our initial study towards producing buried waveguides in BK-7 glass by intersubstrate ion-exchange. This method uses the direct bonding (DB) technique to provide a region of atomic contact between two, BK-7-type substrates, compositionally designed to create opposing potassium and sodium concentration gradients across the bonded interface, between which ion-exchange can take place. By taking this approach we have achieved a single-step buried ion-exchange mechanism with intrinsically low waveguide losses. It is the annealing phase used in DB that provides the key to this process.

Keywords

adhesion; annealing; ion exchange; optical fabrication; optical glass; optical waveguides; BK-7 glass; BK-7-type substrates; annealing phase; buried waveguides; direct bonding; direct-bonded BK-7 substrates; direct-bonded interface; intersubstrate ion-exchange; intrinsically low waveguide losses; ion-exchange; potassium gradients; single-step buried ion-exchange mechanism; sodium concentration gradients; Bonding; Capacitive sensors; Doping; Laser transitions; Laser tuning; Optical waveguides; Pressure measurement; Pulsed laser deposition; Quantum well lasers; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.907057

Filename

907057