Multi-channel wavelength monitor
First Claim
1. A multi-channel wavelength monitor comprising:
- a) a dispersive element that is positioned in an optical path of an incident optical beam having a plurality of wavelengths, the dispersive element dispersing the optical beam into a plurality of optical beams propagating in a plurality of optical paths, wherein each of the plurality of optical beams has one of the plurality of wavelengths;
b) an optical filter that is positioned to intercept each of the plurality of optical paths at a plurality of locations, the optical filter substantially passing a respective one of the plurality of optical beams at a respective one of the plurality of locations and substantially blocking the other optical beams, and c) a plurality of optical detectors that are positioned adjacent to the optical filter in a direction of propagation of the plurality of optical beams, a respective one of the plurality of optical detectors being positioned in a respective one of the plurality of optical paths, wherein each of the plurality of detectors generates an electrical signal that is proportional to an intensity of a respective one of the plurality of optical beams.
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Accused Products
Abstract
A multi-channel wavelength monitor is described that includes a dispersive element that is positioned in an optical path of an incident optical beam having a plurality of wavelengths. The dispersive element disperses the optical beam into a plurality of optical beams that simultaneously propagate in a plurality of optical paths, where each of the plurality of optical beams has one of the plurality of wavelengths. An optical filter is positioned to intercept each of the plurality of optical paths at a plurality of locations. The optical filter substantially passes a respective one of the plurality of optical beams at a respective one of the plurality of locations and substantially blocks the other optical beams. A plurality of optical detectors is positioned adjacent to the optical filter in a direction of propagation of the plurality of optical beams. A respective one of the plurality of optical detectors is positioned in a respective one of the plurality of optical paths. Each of the plurality of detectors generates an electrical signal that is proportional to an intensity of a respective one of the plurality of optical beams.
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Citations
21 Claims
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1. A multi-channel wavelength monitor comprising:
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a) a dispersive element that is positioned in an optical path of an incident optical beam having a plurality of wavelengths, the dispersive element dispersing the optical beam into a plurality of optical beams propagating in a plurality of optical paths, wherein each of the plurality of optical beams has one of the plurality of wavelengths;
b) an optical filter that is positioned to intercept each of the plurality of optical paths at a plurality of locations, the optical filter substantially passing a respective one of the plurality of optical beams at a respective one of the plurality of locations and substantially blocking the other optical beams, and c) a plurality of optical detectors that are positioned adjacent to the optical filter in a direction of propagation of the plurality of optical beams, a respective one of the plurality of optical detectors being positioned in a respective one of the plurality of optical paths, wherein each of the plurality of detectors generates an electrical signal that is proportional to an intensity of a respective one of the plurality of optical beams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A multi-channel wavelength monitor comprising:
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a) a dispersive element that is positioned in an optical path of an incident optical beam having a plurality of wavelengths, the dispersive element dispersing the optical beam into a plurality of optical beams propagating in a plurality of optical paths, wherein each of the plurality of optical beams has one of the plurality of wavelengths;
b) a plurality of optical filters, a respective one of the plurality of optical filters being positioned to intercept a respective one of the plurality of optical paths, a respective one of the plurality of optical filters substantially passing a respective one of the plurality of optical beams and substantially blocking each of the other optical beams; and
c) a plurality of optical detectors that are positioned adjacent to the optical filter in a direction of propagation of the plurality of optical beams, a respective one of the plurality of optical detectors being positioned in a respective one of the plurality of optical paths, wherein each of the plurality of detectors generates an electrical signal that is proportional to an intensity of a respective one of the plurality of optical beams. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for simultaneously monitoring multiple wavelengths in a multi-channel optical beam, the method comprising:
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a) dispersing an optical beam into a plurality of optical beams propagating in a plurality of optical paths, wherein each of the plurality of optical beams has one of a plurality of wavelengths;
b) transmitting the plurality of optical beams through an optical filter, wherein a respective one of a plurality of locations of the optical filter substantially transmits a respective one of the optical beams having a respective one of the plurality of wavelengths and substantially rejects other optical beams; and
c) simultaneously detecting each of the plurality of transmitted optical beams and generating a plurality of electrical signals, a respective one of the plurality of electrical signals corresponding to an intensity of a respective one of the plurality of optical beams. - View Dependent Claims (20, 21)
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Specification