Accession Number : ADP008136

Title :   A Novel Vertical Directional Coupler Made by Graded-Index Ion-Exchanged Slab Waveguides,

Corporate Author : MCGILL UNIV MONTREAL (QUEBEC) DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Noutsios, P. C. ; Yip, G. L. ; Albert, J.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : Passive waveguide components fabricated by K+ - Na+ ion-exchange in glass have demonstrated great potential for low-loss single-mode integrated optical devices. Recently, active components made by combining these ion-exchanged guides with overlayers of semiconductor have received considerable interest for optical detection applications. In this waveguide-detector geometry, single-mode surface guides are used, which are not adequate for efficient fiber-guide coupling. An improved configuration would allow for fiber coupling to a buried guide with minimal insertion loss) and efficient power transfer to a surface guide through a vertical directional coupler. Here, we report, for the first time, the fabrication and measurement of vertical directional couplers made by field-assisted K+-ion exchange in glass with comparison to modelled results.

Descriptors :   *SEMICONDUCTORS, *OPTICAL WAVEGUIDES, *OPTICAL GLASS, *GLASS FIBERS, COMPARISON, CONFIGURATIONS, COUPLERS, COUPLINGS, DETECTION, DETECTORS, DIRECTIONAL, EXCHANGE, FABRICATION, FIBERS, GEOMETRY, GLASS, INSERTION LOSS, ION EXCHANGE, IONS, LOW LOSS, MEASUREMENT, OPTICAL DETECTION, POWER, SURFACES, TIME, TRANSFER, WAVEGUIDES, SODIUM, POTASSIUM, CANADA.

Subject Categories : Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE