Electro-optic guided-to-radiation mode conversion in annealed proton-exchanged PPLN waveguides

J. W. Chang; Y. H. Chen; Q. H. Tseng; W. K. Chang; S. L. Deng; C. S. Hsieh

doi:10.1364/OE.18.024706

Electro-optic guided-to-radiation mode conversion in annealed proton-exchanged PPLN waveguides

J. W. Chang, Y. H. Chen, Q. H. Tseng, W. K. Chang, S. L. Deng, C. S. Hsieh

Department of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

Abstract

We report the design and experimental demonstration of electro-optically active TM-guided to TE-radiation mode converters in annealed proton-exchanged (APE) periodically poled lithium niobate (PPLN) channel waveguides in telecom S-C-L bands (1495-1640 nm). A maximum mode conversion efficiency of >95%/cm was obtained at 1520 nm from a 24-μm-period APE PPLN waveguide under an electro-optic (EO) field of ̃6.3 V/μm at 35°C. This efficiency has been enhanced by a factor of >4.6 over a waveguide built in the single-domain (unpoled) LiNbO₃; it is also to the best of our knowledge the most efficient guided-to-radiation (GTR) mode converter ever reported based on LiNbO₃ on-axis waveguides. A conversion bandwidth of ̃250 nm was also observed from this EO GTR mode converter.

Original language	English
Pages (from-to)	24706-24714
Number of pages	9
Journal	Optics Express
Volume	18
Issue number	24
DOIs	https://doi.org/10.1364/OE.18.024706
State	Published - 22 Nov 2010

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title = "Electro-optic guided-to-radiation mode conversion in annealed proton-exchanged PPLN waveguides",

abstract = "We report the design and experimental demonstration of electro-optically active TM-guided to TE-radiation mode converters in annealed proton-exchanged (APE) periodically poled lithium niobate (PPLN) channel waveguides in telecom S-C-L bands (1495-1640 nm). A maximum mode conversion efficiency of >95%/cm was obtained at 1520 nm from a 24-μm-period APE PPLN waveguide under an electro-optic (EO) field of{\~ }6.3 V/μm at 35°C. This efficiency has been enhanced by a factor of >4.6 over a waveguide built in the single-domain (unpoled) LiNbO3; it is also to the best of our knowledge the most efficient guided-to-radiation (GTR) mode converter ever reported based on LiNbO3 on-axis waveguides. A conversion bandwidth of{\~ }250 nm was also observed from this EO GTR mode converter.",

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T1 - Electro-optic guided-to-radiation mode conversion in annealed proton-exchanged PPLN waveguides

AU - Chang, J. W.

AU - Chen, Y. H.

AU - Tseng, Q. H.

AU - Chang, W. K.

AU - Deng, S. L.

AU - Hsieh, C. S.

PY - 2010/11/22

Y1 - 2010/11/22

N2 - We report the design and experimental demonstration of electro-optically active TM-guided to TE-radiation mode converters in annealed proton-exchanged (APE) periodically poled lithium niobate (PPLN) channel waveguides in telecom S-C-L bands (1495-1640 nm). A maximum mode conversion efficiency of >95%/cm was obtained at 1520 nm from a 24-μm-period APE PPLN waveguide under an electro-optic (EO) field of ̃6.3 V/μm at 35°C. This efficiency has been enhanced by a factor of >4.6 over a waveguide built in the single-domain (unpoled) LiNbO3; it is also to the best of our knowledge the most efficient guided-to-radiation (GTR) mode converter ever reported based on LiNbO3 on-axis waveguides. A conversion bandwidth of ̃250 nm was also observed from this EO GTR mode converter.

AB - We report the design and experimental demonstration of electro-optically active TM-guided to TE-radiation mode converters in annealed proton-exchanged (APE) periodically poled lithium niobate (PPLN) channel waveguides in telecom S-C-L bands (1495-1640 nm). A maximum mode conversion efficiency of >95%/cm was obtained at 1520 nm from a 24-μm-period APE PPLN waveguide under an electro-optic (EO) field of ̃6.3 V/μm at 35°C. This efficiency has been enhanced by a factor of >4.6 over a waveguide built in the single-domain (unpoled) LiNbO3; it is also to the best of our knowledge the most efficient guided-to-radiation (GTR) mode converter ever reported based on LiNbO3 on-axis waveguides. A conversion bandwidth of ̃250 nm was also observed from this EO GTR mode converter.

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JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 24

ER -

Electro-optic guided-to-radiation mode conversion in annealed proton-exchanged PPLN waveguides

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