Channel Waveguide Study
Abstract
The objective of this program was the study and development of directional coupler modulators based on the use of the LiNb(x)Ta(1-x)O3 waveguide system developed at RCA Laboratories. In this final report, observations of surface diffusion and ridge formation are described. Briefly, the surface of the LNT guide is raised by an amount equal to approximately twice the initial niobium thickness. The lateral spread of Nb in y-plates is approximately 20 times the diffusion depth while the spread in x-plates appears to be less than the resolving power of the measurements. The effect of this spread on the operation of stripe guides is discussed and experimental observations on stripe guides and stripe couplers are described. A summary is given of how directional coupling modulators are expected to operate. The effect that constructional tolerances have on the quality of switching that may be obtained in actual devices is analyzed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA020123
Entities
People
- C. C. Neil
- J. M. Hammer
- W. Phillips
Organizations
- Sarnoff Corporation