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

Image Number 7 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
Method and system for determining a suppression factor of a suppression system and a lithographic apparatus
Techniques for determining optimized local repair paths
Regenerative power storage system mounted on DC electric railway car
Motor vehicle, toy and/or replica
Transferring a document
Aggregating completion messages in a sideband interface
Image forming apparatus
  Randomly Featured Patents
Interface circuit
Bat shaped pendant
Key arrangements and methods of use
capacitive sensor interface circuit
Three-dimensional transistor with double channel configuration
Slurry for CMP and CMP method
Method and apparatus for the relief of headache pain
Device and method for balancing the weight on a robot arm
School bus and trailer systems tester
Intelligent connecting plug for a data bus