Wavelength Converter Based on Linearly Chirped Gratings in Lithium Niobate Through Cascaded Second-Order Processes
GAO Shi-Ming, YANG Chang-Xi, JIN Guo-Fan
State Key Laboratory of Precision Measurement Technology and
Instruments, Tsinghua University, Beijing 100084
Wavelength Converter Based on Linearly Chirped Gratings in Lithium Niobate Through Cascaded Second-Order Processes
GAO Shi-Ming;YANG Chang-Xi;JIN Guo-Fan
State Key Laboratory of Precision Measurement Technology and
Instruments, Tsinghua University, Beijing 100084
关键词 ：
42.65.Ky ,
42.79.Nv
Abstract ： We report a wavelength converter based on linearly chirped gratings in a lithium niobate crystal through cascaded second-order nonlinear processes. The influence of the chirp coefficient on the conversion bandwidth and the efficiency is analysed. The exact phase matching point is optimized at the 0.33 times of the waveguide total length. When the waveguide length is 3cm, the bandwidth of the linearly chirped grating increases 42% with the efficiency penalty of 1.7 dB compared with the periodic grating. At the same mean conversion efficiency of -1.4 dB via adjusting the waveguide total lengths, the bandwidth of the linearly chirped grating is 36% broader than the periodic grating.
Key words ：
42.65.Ky
42.79.Nv
出版日期: 2003-08-01
:
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
42.79.Nv
(Optical frequency converters)
引用本文:
GAO Shi-Ming;YANG Chang-Xi;JIN Guo-Fan. Wavelength Converter Based on Linearly Chirped Gratings in Lithium Niobate Through Cascaded Second-Order Processes[J]. 中国物理快报, 2003, 20(8): 1272-1274.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I8/1272
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