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Optical Fiber Communication Conference

Optical Nonlinear Processing Using PPLN

M. M. Fejer

Published Mar 6, 2005• 0 citations
OpenAlex

Abstract

Optical-frequency mixing can accomplish a variety of wavelength-and time-domain all-optical signal processing functions. Operation at speeds up to 160 Gb/s, bandwidths of 70 nm, and with as few as 400-photon pulses have been demonstrated in periodically-poled lithium niobate (PPLN) devices.

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We report on the demonstration of optical frequency division by 3 via two successive stages of difference frequency generation. Two input sources at 532 nm and 798 nm generated an output at 1596 nm and the mixing between the 798-nm input and the 1596-nm output generated a second 1596-nm output. Both difference frequency mixing stages were implemented in a single piece of quasi-phase matched periodically poled lithium niobate. By measuring the beat frequency between the two 1596-nm an exact frequency ratio of 3:2 was obtained between two input sources. A signal-to-noise ratio of 27 dB was obtained for a resolution bandwidth of 100 kHz.