Acta Optica Sinica, Volume. 31, Issue 11, 1113001(2011)
Research for Measuring the Multi-Mode Cut-Off Wavelength of LiNbO3 Waveguide Modulator Fabricated by Proton Exchange
An inverted structure of Y-branch LiNbO3 waveguide for measuring the multi-mode cut-off wavelength of the phase modulator is proposed and experimented. Analysis of the mode coupling shows that the output power of the inverted Y-branch waveguide is cyclical fluctuated with the wavelength when the waveguide is in multi-mode. And this characteristics can be used to judge the multi-mode cut-off wavelength. The validity of the method has been verified by simulation and experiment with sample.
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Zhang Guang, Chen Baoxue, Fu Changsong, Sui Guorong, Wang Guande. Research for Measuring the Multi-Mode Cut-Off Wavelength of LiNbO3 Waveguide Modulator Fabricated by Proton Exchange[J]. Acta Optica Sinica, 2011, 31(11): 1113001
Category: Integrated Optics
Received: Jan. 25, 2011
Accepted: --
Published Online: Oct. 24, 2011
The Author Email: Guang Zhang (guang_usst@163.com)