| 摘要 |
<p>Optical waveguides suitable for use in high temperature environments are constructed of a waveguiding body composed of a first crystalline aluminum garnet, which is clad with an epitaxially deposited layer of a second crystalline aluminum garnet. The second crystalline aluminum garnet has a lower refractive index than the first crystalline aluminum garnet. When there is sufficient lattice mismatch between garnet substrate and cladding layer, strain is induced which causes stress with resultant birefringence in the waveguiding layer. Such birefringent waveguides maintain polarization of light propagated therein.</p> |
