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. 01, 1993
Filed:
May. 08, 1992
Daryoosh Vakhshoori, Scotch Plains, NJ (US);
George J Zydzik, Columbia, NJ (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
This invention pertains to integration of nonlinear parametric waveguide spectrometer with polyimide waveguide focusing mirror. The waveguide spectrometer uses nonlinear counter-propagating .chi..sup.2 interaction to simulate the action of a grating and produce the required chromatic dispersion. To map the near-field to far-field and separate different wavelength components, an organic-dielectric (e.g. a polyimide/SiO.sub.2) guide and a 45.degree. RIE etched mirror were fabricated to simulate a concave focusing integrated mirror. The measured spot size at the focal plane of the mirror was about 0.7 .mu.m corresponding to about 1.6 Angstroms spectral resolution in agreement with the theoretical prediction. The device has good spectral resolution; however, the conversion efficiency is smaller than the theoretical prediction. Even with the low signal power level, the integrated deviced may be of use in applications that can take advantage of the visible output and do not require high power conversion efficiency.