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
Apparatus and method for connection control with media negotiation successful on different media formats
Method for manufacturing a magnet coil configuration using a slit band-shaped conductor
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
Method for mapping resource units
Mechanisms for marking the orientation of a sawed die
Anti-phishing system and method
Viewing stand
  Randomly Featured Patents
Extrusion-foamed board of resin blend comprising modified polypropylene resin and polystyrene resin
Thermostat apparatus
Agricultural or horticultural preparation with light stability
Wafer-level thick film standing-wave clocking
Method and apparatus for selectively unblanking special signals inserted in the vertical blanking interval of a television signal
Valve mount assembly
Process for fabricating nonaqueous electrolyte secondary cells
Method for manufacturing a rubber sheet which is electrically insulating and thermally radiating and rubber sheets made therefrom with improve resistance to flexural fatigue
Safety valve for compressed liquid gas
Radiation monitor diode detector with constant efficiency for both CW and pulsed signals