Patent ID: 6603897
Filing Date: 2003-08-05
Classification: G02B

Abstract:
A multiplexing device operable over a multiplexing wavelength band of light, the multiplexing device comprisinga first optical transmitting plate having a first-plate outer surface and a first-plate inner surface, the first optical transmitting plate being transparent to light within the multiplexing wavelength band; a first-plate optical reflective filter structure in facing contact with the first-plate outer surface; a second optical transmitting plate having a second-plate outer surface and a second plate inner surface, the second-plate inner surface being in a facing-but-spaced-apart relation to the first-plate inner surface with a central medium separating the first optical transmitting plate from the second optical transmitting plate, the second optical transmitting plate being transparent to light within the multiplexing wavelength band, wherein the first optical transmitting plate and the second optical transmitting plate each have an index of refraction to light within the multiplexing wavelength band that is multiplexing wavelength band; and a second-plate optical reflective filter structure in facing contact with the second-plate outer surface, the first-plate optical reflective filter structure and the second-plate optical reflective filter structure being positioned to define a beam path that is alternatively and sequentially reflected from the first-plate optical reflective filter structure and the second-plate optical reflective filter structure.