NDLI: Response Flattening of Efficient Broadband Wavelength Converters Based on Cascaded Sum and Difference Frequency Generation in Periodically Poled Lithium Niobate Waveguides

Content Provider	IEEE Xplore Digital Library
Author	Tehranchi, A. Kashyap, R.
Copyright Year	1965
Abstract	For the single-pass and double-pass wavelength converters based on cascaded sum and difference frequency generation in quasi-phase matched lithium niobate waveguide, we present the criteria for a choice of the waveguide length and the assignment of pump powers to achieve the desired efficiency, ripple and bandwidth with a large pump wavelength difference of 75 nm. It is found that using the double-pass structure with a 95% reflectivity for the sum frequency wave, the mean efficiency is increased at least 5 dB compared to that of the single-pass one with the same length and input pump powers and the bandwidth is large enough to cover the entire conventional telecommunications C-band and long-wavelength L-band. To flatten the excessive response fluctuation of the double-pass scheme, we propose tuning one of the pumps to longer wavelengths incurring a small penalty of a slight reduction in the mean efficiency which can be compensated by increasing the input pump powers. We also show that to achieve the same amount of flatness, double-pass converters have a smaller efficiency penalty compared to the single-pass converters.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1114
Ending Page	1120
Page Count	7
File Size	498861
File Format	PDF
ISSN	00189197
Volume Number	45
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency conversion Lithium niobate Optical wavelength conversion Optical waveguides Bandwidth Optical frequency conversion Wavelength conversion Wavelength division multiplexing Power generation Photonics sum frequency generation Conversion bandwidth conversion efficiency difference frequency generation quasi-phase matching
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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