Laser-Waveguide Transition Coupling Structure Fabrication.
Abstract
This report describes the techniques used to fabricate transition structures for coupling heterjunction lasers to II-VI waveguides. The process uses a local heat source to round the core of a rectangular dielectric waveguide producing a smooth transition from a rectangular crossection matching the 1 x 20 micrometer laser output to a round crossection similar to a diffused waveguide. When it is rounded, the transition retains the rectangular guide area, e.g., 1 x 20 micrometers, will round to 5 micrometers. If a smaller diameter is desired, the transition can be tapered during the rounding operation. Total transition loss from scattering, absorption and radiation is typically 1 dB.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1975
- Accession Number
- ADA015318
Entities
People
- Gordon L. Mitchell
- Roger L. K. Matsumoto
Organizations
- University of Washington