Planar waveguide spectrograph

Details Planar waveguide spectrograph Planar waveguide spectrograph

G - Physics

01

J

G01J 3/36 (2006.01) G01J 3/20 (2006.01) G01J 3/28 (2006.01) G01J 3/40 (2006.01) G02B 6/32 (2006.01) G02B 6/34 (2006.01) G01J 3/02 (2006.01) G01J 3/18 (2006.01) G01J 3/24 (2006.01)

Patent

CA 2098832

2098832 9211517 PCTABS00014 A spectrograph usable as a demutiplexer/detector in a wavelength division multiplexing optical system. The spectrograph comprises a planar waveguide (50) and a detector array (52). The planar waveguide (50) has a dispersive edge (56) having an inwardly concave shape, an input edge (62), and a straight output edge (64). The dispersive edge (56) has a reflective diffraction grating (60) formed on it, the grating (60) having a variable line spacing. An optical input signal comprising a plurality of different wavelength ranges enters the waveguide at the input edge (62), and travels through the waveguide and strikes the grating (60). The grating (60) focuses the optical energy in each of the wavelength ranges at a focal spot at the output edge (64), the position of each focal spot being a function of wavelength. The detector array (52) comprises a plurality of photodetectors positioned along a straight line, such that the photodetectors are positioned at the focal spots. Each photodetector therefore detects the optical energy in one of the input ranges. A stack of such planar waveguides may be assembled to form a multi-channel spectrograph.

Affiliated with

Also associated with

Rating

Planar waveguide spectrograph does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Planar waveguide spectrograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planar waveguide spectrograph will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1777149