Coupling and absorption phenomena in semiconductor-clad dielectric optical waveguides
Unique propagation characteristics arise from the coupling of light between the lossless modes of a dielectric waveguide and the lossy modes supported by an absorptive cladding layer such as a semiconductor. These effects occur because the propagating lightwave couples into a variety of modes that exist in the semiconductor-clad waveguide. Properties such as cladding thickness, refractive index, and absorption level greatly affect modes of the clad waveguide. Such mode effects are due to periodic coupling between the dielectric layer and the semiconductor cladding. The resulting characteristics suggest use in various device applications. Here, we characterize the periodic coupling effect and how it creates unique modes in the clad waveguide structure. We also describe how the refractive index and absorption of the cladding work together to influence the properties of those modes.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Virginia Univ., Charlottesville (USA). Dept. of Electrical Engineering
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6094397
- Report Number(s):
- SAND-87-0160C; CONF-8708110-17; ON: DE87013446
- Country of Publication:
- United States
- Language:
- English
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360603 -- Materials-- Properties
42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
ABSORPTION
ATTENUATION
COMPUTER CODES
COUPLING
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY LOSSES
LOSSES
M CODES
MATERIALS
OPTICAL MODES
OPTICAL SYSTEMS
OSCILLATION MODES
PHYSICAL PROPERTIES
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
WAVE PROPAGATION
WAVEGUIDES