Resources Contact Us Home
Wavelength selection, multiplexing and demultiplexing method and apparatus

Image Number 6 for United States Patent #6038076.

Wavelength selection apparatus for use in various applications such as spectrometry, the demultiplexing/multiplexing of multiline laser beams, and so forth, includes an input prism and an output prism aligned along an optical axis, and at least one side mirror. A second side mirror spaced from the first side mirror on the opposite side of the optical axis may be provided, as well as end mirrors adjacent to the input and output prisms. An incoming beam incident upon the input prism is refracted so as to deflect and angularly disperse the various wavelengths present in the input beam, with the dispersing beam reflected from the first side mirror either directly to the output prism or with intermediate reflections from the second side mirror and the end mirrors before impinging upon the output prism. The output prism matches the input prism and deflects and recollimates the dispersed wavelengths to provide parallel output beams of different wavelengths spaced from one another. Selection of a desired wavelength in the output beam may be obtained by moving the input and output prisms with respect to each other axially until the desired output beam is moved to a position in which it passes through an aperture.

  Recently Added Patents
Optical switching device and communications system
Method for remotely measuring fluctuations in the optical index of refraction of a medium
Categorization of design rule errors
Light emitting diode having multi-cell structure and method of manufacturing the same
Method for transmitting an electronic short message to multiple receivers
Transferring data by touch between touch-screen devices
Wireless communication system, wireless communication device, wireless communication method, and program
  Randomly Featured Patents
Gas atmosphere heating furnace
Roller for cleaning phonograph records
Dose calibrator linearity evaluation
Automobile roof carrier
Automatic orientation circuit indicator device for portable power tools and the like
Wiping system for inkjet printer
Preparation of hydrogen cyanide
Interchangeable hypodermic needle assemblage
Receive coalescing and direct data placement
Binaural stimulation in neural auditory prostheses or hearing aids