Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers

Chung, HP; Lee, CH; Huang, KH; Yang, SL; Wang, K; Solntsev, AS; Sukhorukov, AA; Setzpfandt, F; Chen, YH

Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers

Chung, HP Lee, CH Huang, KH Yang, SL Wang, K Solntsev, AS

Sukhorukov, AA Setzpfandt, F Chen, YH

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Publication Type:: Journal Article
Citation:: Optics Express, 2019, 27 (2), pp. 1632 - 1645
Issue Date:: 2019-01-21

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Field	Value	Language
dc.contributor.author	Chung, HP	en_US
dc.contributor.author	Lee, CH	en_US
dc.contributor.author	Huang, KH	en_US
dc.contributor.author	Yang, SL	en_US
dc.contributor.author	Wang, K	en_US
dc.contributor.author	Solntsev, AS https://orcid.org/0000-0003-4981-9730	en_US
dc.contributor.author	Sukhorukov, AA	en_US
dc.contributor.author	Setzpfandt, F	en_US
dc.contributor.author	Chen, YH	en_US
dc.date.issued	2019-01-21	en_US
dc.identifier.citation	Optics Express, 2019, 27 (2), pp. 1632 - 1645	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131465
dc.description.abstract	© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We report, to the best of our knowledge, the first broadband polarization mode splitter (PMS) based on the adiabatic light passage mechanism in the lithium niobate (LiNbO3) waveguide platform. A broad bandwidth of ~140 nm spanning telecom S, C, and L bands at polarization-extinction ratios (PER) of >20 dB and >18 dB for the TE and TM polarization modes, respectively, is found in a five-waveguide adiabatic coupler scheme whose structure is optimized by an adiabaticity engineering process in titanium-diffused LiNbO3 waveguides. When the five-waveguide PMS is integrated with a three-waveguide “shortcut to adiabaticity” structure, we realize a broadband, high splitting-ratio (ηc) mode splitter for spatial separation of TE- (H-) polarized pump (700-850 nm for ηc>99%), TM- (V-) polarized signal (1510-1630 nm for ηc>97%), and TE- (H-) polarized idler (1480-1650 nm for ηc>97%) modes. Such a unique integrated-optical device is of potential for facilitating the on-chip implementation of a pump-filtered, broadband tunable entangled quantum-state generator.	en_US
dc.relation.ispartof	Optics Express	en_US
dc.relation.isbasedon	10.1364/OE.27.001632	en_US
dc.rights	© 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.	en_US
dc.subject.classification	Optics	en_US
dc.title	Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	27	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	1005 Communications Technologies	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	27	en_US

Abstract:

© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We report, to the best of our knowledge, the first broadband polarization mode splitter (PMS) based on the adiabatic light passage mechanism in the lithium niobate (LiNbO3) waveguide platform. A broad bandwidth of ~140 nm spanning telecom S, C, and L bands at polarization-extinction ratios (PER) of >20 dB and >18 dB for the TE and TM polarization modes, respectively, is found in a five-waveguide adiabatic coupler scheme whose structure is optimized by an adiabaticity engineering process in titanium-diffused LiNbO3 waveguides. When the five-waveguide PMS is integrated with a three-waveguide “shortcut to adiabaticity” structure, we realize a broadband, high splitting-ratio (ηc) mode splitter for spatial separation of TE- (H-) polarized pump (700-850 nm for ηc>99%), TM- (V-) polarized signal (1510-1630 nm for ηc>97%), and TE- (H-) polarized idler (1480-1650 nm for ηc>97%) modes. Such a unique integrated-optical device is of potential for facilitating the on-chip implementation of a pump-filtered, broadband tunable entangled quantum-state generator.

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http://hdl.handle.net/10453/131465