G - Physics – 11 – C
Patent
G - Physics
11
C
352/89
G11C 19/30 (2006.01) G02F 1/39 (2006.01) G11C 13/08 (1985.01)
Patent
CA 1268541
IN-LINE FIBER OPTIC MEMORY Abstract of the Disclosure A fiber optic recirculating memory comprises a splice- free length of optical fiber which forms a loop that is optically closed by means of a fiber optic coupler. The coupler couples an optical signal input pulse to the loop for circulation therein, and outputs a portion of the signal pulse on each circulation to provide a series of output pulses. A pump source is included to pump the fiber loop with a pump signal having sufficient intensity to cause stimulated Raman scattering in the fiber loop, and thereby cause amplification of the circulating signal pulse. The fiber characteristics, coupler characteristics, and pump power are selected to yield a Raman gain which compensates for the total round-trip losses in the fiber loop, so as to provide an output pulse train of constant amplitude pulses. The invention may be implemented utilizing a standard coupler with a pump signal modulation technique. The pump signal is input to the loop as a series of pulses having a duration and a periodicity chosen to prevent overlap of recirculating pump pulses with input pump pulses until at least two circulations of the loop, which minimizes pump power fluctuations and will therefore enhance output signal stability.
529460
Desurvire Emmanuel
Digonnet Michel J.f.
Shaw Herbert J.
Gowling Lafleur Henderson Llp
The Board Of Trustees Of The Leland Stanford Junior University
LandOfFree
In-line fiber optic memory does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with In-line fiber optic memory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-line fiber optic memory will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1281551