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:
Jun. 20, 2006
Filed:
May. 12, 2003
Chuni Ghosh, West Windsor, NJ (US);
Laurence S. Watkins, Pennington, NJ (US);
Qing Wang, Plainsboro, NJ (US);
Raymond William Simpson, Hamilton Square, NJ (US);
Steven R Leffler, Lawrenceville, NJ (US);
Chuni Ghosh, West Windsor, NJ (US);
Laurence S. Watkins, Pennington, NJ (US);
Qing Wang, Plainsboro, NJ (US);
Raymond William Simpson, Hamilton Square, NJ (US);
Steven R Leffler, Lawrenceville, NJ (US);
Princeton Optronics, Inc., Mercerville, NJ (US);
Abstract
A wavelength locker comprising a semiconductor or air gap etalon is used to monitor and maintain the output wavelength of a coherent radiation source. Said etalon may be fabricated from a commercially available silicon wafer, with individual regions of the wafer, each functioning as a separate etalon, etched or otherwise processed to produce different thicknesses. Illumination by the coherent radiation source generated transmitted signal intensities that are detected and processed to determine the output wavelength of the coherent radiation source. A wavelength tuner is then used to maintain or vary the output wavelength based on continuous measurements of etalon signal intensity.