Abstract

We demonstrate the impulse-equivalent approach [Opt. Lett. 21, 833 (1996)] to time-domain storage of optical data. Using the 128-bit real Huffman–Ackroyd code as the write–read sequences, we have successfully stored a 42-μs-long stream containing 420 bits of data in a 40-MHz spectral channel in a Eu³⁺:Y₂SiO₅ crystal. The stored data were repeatedly recalled as many as eight times with high signal fidelity, showing no measurable sidelobe-induced noise. Data retrieval with the use of mismatched write–read pulses was also examined, and implications of the results for data encryption are discussed.

© 1996 Optical Society of America

Impulse-equivalent time-domain optical memory

X. A. Shen, R. Hartman, and R. Kachru
Opt. Lett. 21(11) 833-835 (1996)

Experimental demonstration of swept-carrier time-domain optical memory

H. Lin, T. Wang, G. A. Wilson, and T. W. Mossberg
Opt. Lett. 20(1) 91-93 (1995)

Experimental demonstration of data erasure for time-domain optical memories

T. R. Dyke, M. J. Sellars, G. J. Pryde, N. B. Manson, U. Elman, and S. Kröll
J. Opt. Soc. Am. B 16(5) 805-811 (1999)

Use of biphase-coded pulses for wideband data storage in time-domain optical memories

X. A. Shen and R. Kachru
Appl. Opt. 32(17) 3149-3151 (1993)

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

X. A. Shen and R. Kachru
Opt. Lett. 18(22) 1967-1969 (1993)