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:
Sep. 03, 1991
Filed:
Jan. 18, 1990
Bunsen Fan, Peekskill, NY (US);
Ricky A Rand, Somers, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A pulse converter includes a set-reset flip/flop, or OPTOGLE 10, having a pair of cross-coupled switching devices such as transistors Q1, Q2 or logic gates G1, G2. The circuit operates by coupling pulses of optical radiation to each of the devices for causing the devices to alternately toggle between an on-state and an off-state. Optical inputting devices such as photodiodes or photoconductors, or the gates of FET transistors themselves, are integrally formed upon a common substrate with the switching devices for minimizing stray inductive and capacitive reactances to substantially eliminate temporal jitter in an electrical output signal. A pulsed laser source and a fiber optic or optical waveguide provide non-overlapping optical pulses to each of the switching devices. In accordance with one embodiment each of the switching devices is a GaAs MESFET device having a gate terminal comprised of a substantially transparent layer of electrical conductor having an interdigitated geometry and an overlying anti-reflection (AR) coating.