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44-ns Continuously Tunable Dispersionless Optical Delay Element Using a PPLN Waveguide With Two-Pump Configuration, DCF, and a Dispersion Compensator

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9 Author(s)
Yan Wang ; Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA ; Changyuan Yu ; Lianshan Yan ; Willner, A.E.
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This letter presents an optically controlled, continuously tunable, dispersionless optical delay element in fiber based on a selective wavelength converter using a periodically poled lithium-niobate waveguide with two-pump configuration, dispersion-compensated fiber, and a dispersion compensator. Optical phase information is preserved in this technique, and there is no fundamental limitation on pulsewidth or bit rate. A Continuous optical delay up to 44-ns is shown for 10-Gb/s nonreturn-to-zero applications, which is equal to a 440-bit slot

Published in:

Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 11 )