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

Hung Pin Chung; Chieh Hsun Lee; Kuang Hsu Huang; Sung Lin Yang; Kai Wang; Alexander S. Solntsev; Andrey A. Sukhorukov; Frank Setzpfandt; Yen Hung Chen

doi:10.1364/OE.27.001632

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

Hung Pin Chung
, Chieh Hsun Lee
, Kuang Hsu Huang
, Sung Lin Yang
, Kai Wang
, Alexander S. Solntsev
, Andrey A. Sukhorukov
, Frank Setzpfandt
, Yen Hung Chen^*

^*Corresponding author for this work

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

27 Citations (Scopus)

Abstract

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 (η_c) mode splitter for spatial separation of TE- (H-) polarized pump (700-850 nm for η_c>99%), TM- (V-) polarized signal (1510-1630 nm for η_c>97%), and TE- (H-) polarized idler (1480-1650 nm for η_c>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.

Original language	English
Pages (from-to)	1632-1645
Number of pages	14
Journal	Optics Express
Volume	27
Issue number	2
DOIs	https://doi.org/10.1364/OE.27.001632
Publication status	Published - 21 Jan 2019

Access to Document

10.1364/OE.27.001632

Cite this

@article{b8623abbbd3749908bbcfb1ee3d061c8,

title = "Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers",

abstract = "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 \textasciitilde{}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.",

author = "Chung, \{Hung Pin\} and Lee, \{Chieh Hsun\} and Huang, \{Kuang Hsu\} and Yang, \{Sung Lin\} and Kai Wang and Solntsev, \{Alexander S.\} and Sukhorukov, \{Andrey A.\} and Frank Setzpfandt and Chen, \{Yen Hung\}",

note = "Publisher Copyright: {\textcopyright} 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",

year = "2019",

month = jan,

day = "21",

doi = "10.1364/OE.27.001632",

language = "English",

volume = "27",

pages = "1632--1645",

journal = "Optics Express",

issn = "1094-4087",

publisher = "Optica Publishing Group",

number = "2",

}

TY - JOUR

T1 - Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers

AU - Chung, Hung Pin

AU - Lee, Chieh Hsun

AU - Huang, Kuang Hsu

AU - Yang, Sung Lin

AU - Wang, Kai

AU - Solntsev, Alexander S.

AU - Sukhorukov, Andrey A.

AU - Setzpfandt, Frank

AU - Chen, Yen Hung

PY - 2019/1/21

Y1 - 2019/1/21

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85060090734

U2 - 10.1364/OE.27.001632

DO - 10.1364/OE.27.001632

M3 - Article

SN - 1094-4087

VL - 27

SP - 1632

EP - 1645

JO - Optics Express

JF - Optics Express

IS - 2

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this