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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 18, Iss. 22 — Nov. 15, 1993
  • pp: 1967–1969

Coherent saturation removal in time-domain optical memory by storage of frequency-chirped data pulses

X. A. Shen and R. Kachru  »View Author Affiliations


Optics Letters, Vol. 18, Issue 22, pp. 1967-1969 (1993)
http://dx.doi.org/10.1364/OL.18.001967


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Abstract

We report a novel technique for storing digital optical data in coherent time-domain optical memory to circumvent the problem of coherent saturation. In this technique, the carrier frequency of a data stream to be stored is slowly chirped so its power is spread over the data bandwidth for maximum data storage. In a proof-of-concept experiment, a total of 500 bits of data were stored at a rate of 20 Mbits/s in a 45-MHz-wide channel within the inhomogeneous line of the 7F05D1 transition in Eu3+:Y2SiO5. The result suggests a minimum storage density of ~1.5 Gbits/cm3 for this transition. Issues related to the storage of frequency-chirped data, such as the optimum chirp width and the saturation owing to peak–sidelobe interference, are also discussed.

© 1993 Optical Society of America

History
Original Manuscript: June 14, 1993
Published: November 15, 1993

Citation
X. A. Shen and R. Kachru, "Coherent saturation removal in time-domain optical memory by storage of frequency-chirped data pulses," Opt. Lett. 18, 1967-1969 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-22-1967

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