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:
Nov. 17, 1998
Filed:
Nov. 25, 1996
Timothy Butrie, Orefield, PA (US);
Shigemasa Enoeda, Okaya, JP;
Joseph Edward Riska, Macungie, PA (US);
Stephen James Salko, Weatherly, PA (US);
Thomas Stanley Stakelon, Allentown, PA (US);
Alka Swanson, San Diego, CA (US);
Toshimichi Yasuda, Okaya, JP;
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
An optical transceiver assembly for use in a bidirectional system includes a beam splitter to direct an incoming signal to a photodiode. An outgoing signal from a laser diode is partially transmitted and partially reflected by the splitter. The reflected signal, which may reach the photodiode, constitutes crosstalk which is reduced by orienting the polarization direction of the splitter essentially parallel to that of the outgoing signal from the laser diode. In another embodiment, which enhances coupling efficiency, a single element asphere lens is positioned between the laser diode and the splitter.