Novel design method for all-optical ultrafast gate switches using cascaded second-order nonlinear effect in quasi-phase matched LiNbO3 devices

The authors propose a novel method of designing all-optical ultrafast gate switches that employ the cascade of the second harmonic generation and difference frequency mixing in quasi-phase matched LiNbO/sub 3/ devices. In this design method, the device length is maximized under the condition that cr...

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Bibliographic Details
Published in:IEEE photonics technology letters 2002-10, Vol.14 (10), p.1409-1411
Main Authors: Fukuchi, Y., Kikuchi, K.
Format: Article
Language:English
Subjects:
Bit rate
Design methodology
Fiber nonlinear optics
Nonlinear optics
Optical crosstalk
Optical harmonic generation
Optical mixing
Optical pumping
Optical switches
Optical wavelength conversion
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Summary:The authors propose a novel method of designing all-optical ultrafast gate switches that employ the cascade of the second harmonic generation and difference frequency mixing in quasi-phase matched LiNbO/sub 3/ devices. In this design method, the device length is maximized under the condition that crosstalk of the switch is maintained below a certain allowable value at a given bit rate. Following the design method, the authors find that the switching efficiency can significantly be enhanced by compensation for the walkoff between the fundamental and second harmonic pulses.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2002.802086