The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2001
Filed:
Jan. 11, 1999
Scott L. Broutin, Kutztown, PA (US);
James Kevin Plourde, Allentown, PA (US);
George John Przybylek, Douglasville, PA (US);
John William Stayt, Jr., Schnecksville, PA (US);
Frank Stephen Walters, Kutztown, PA (US);
Agere Systems Optoelectronics Guardian Corp., Miami Lakes, FL (US);
Abstract
A wavelength stabilized laser system includes a laser that produces a laser light having an amplitude and a wavelength that varies as a function of a temperature of the laser. A temperature control device controls the temperature of the laser. A beam splitter deflects a portion of the laser light. A first detector receives the portion of the laser light from the beam splitter and provides a first signal representing the amplitude of the laser light. A filter has a gain that is a function of the wavelength of the laser light. The filter receives the laser light and outputs a filtered light having an amplitude that varies with the wavelength of the laser light. A second detector provides a second signal representing the amplitude of the filtered light. A sealed housing contains the laser, the first and second detectors and the filter. The housing has a window. An electromagnetic radiation source outside of the housing transmits a calibration beam through the window and through the filter, onto the second detector. One or more processors control the temperature control device based on the first and second signals, and monitor a light transmitting characteristic of the filter based on the second signal.