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:
Mar. 08, 1994
Filed:
Oct. 20, 1992
Martinus B Diemeer, Zoetermeer, NL;
Koninklijke PTT Nederland N.V., Groningen, NL;
Abstract
The invention relates to an integrated optical device which comprises an adjustable Mach-Zehnder interferometer. The waveguide structure of the device is fabricated on the basis of polable unpoled material, the material in one (2) of the branches (2, 3) of the MZ interferometer being poled in a certain area (7). In the case of maximum poling in advance, the degree of poling of the poled material can subsequently be adjusted under conditions of accelerated thermal relaxation. Advantage: the device can first be fabricated, as far as its structure is concerned, using fabrication techniques which are standard for the selected material without additional attention to correct sizing, after which the interferometer section can then be adjusted in a simple manner to the optical pathlength differences required for the specific function of the device. As an example, a passive polarisation splitter is described.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile