TiO2-based compact TM-pass polarizer at visible wavelengths with ultra-low power loss

Zhao, Qi; Yu, Wantai; Zhao, Yiru; Dai, Shi-Bo; Liu, Jianguo

doi:10.1016/j.optcom.2020.126282

Cited by 10 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6,7 Polarization management devices, one of the important components of PICs, consist of polarization beam splitters, [7][8][9] polarization rotators, 10,11 polarization rotator and splitters, [12][13][14] and polarizers. 1,3,[15][16][17][18][19][20][21][22][23][24][25][26] Compared with the other polarization devices, the structure of the polarizers is relatively easy to be fabricated. The main function of a polarizer is to implement that only one polarization state (TE or TM) is permitted to propagate through the waveguide while the undesirable polarization state will be rapidly eliminated.…”

Section: Introductionmentioning

confidence: 99%

Low loss and compact transverse magnetic-pass polarizer on lithium-niobate-on-insulator platform using improved hybrid plasmonic grating

Xia,

Fei,

et al. 2024

Opt. Eng.

View full text Add to dashboard Cite

A low-loss and compact TM-pass polarizer is demonstrated based on improved hybrid plasmonic grating (HPG) on a Z-cut lithium-niobate-on-insulator (LNOI) platform. In this work, we introduced the silica partition structures surrounding an LN (LiNbO 3 ) ridge waveguide to support two parallel metal gratings, achieving the optimal coupling coefficient for HPG. Compared with the traditional HPG structure, the transverse electric (TE) mode suffers a higher confinement and the transverse magnetic (TM) mode transmission loss exhibits a significant reduction in the improved HPG structure. The simulation shows that the polarizer achieves a broad bandwidth of 150 nm (1500 to 1650 nm) with an extinction ratio (ER) over 20 dB and an insertion loss varying from 0.18 to 0.3 dB, including a maximum ER of 36 dB at the wavelength 1550 nm. In addition, the length of the demonstrated polarizer is only 10 μm, making it compact for integration. The proposed polarizer shows a good application prospect for integrated photonics in LNOI.

show abstract

Section: Introductionmentioning

confidence: 99%

Low loss and compact transverse magnetic-pass polarizer on lithium-niobate-on-insulator platform using improved hybrid plasmonic grating

Xia,

Fei,

et al. 2024

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…Hybrid plasmonic waveguide (HPW) is another solution to achieve polarizer with high ER, low IR [14], [15], and novel materials [16], [17]. Hybrid plasmonic grating (HPG) is a more practical solution to realize high-performance polarizers with interactions of reflection and mode mismatch [18]- [22]. However, previous works are almost in the situation where the waveguide is strictly single-mode without concerning higher-order modes introduced by the metal grating.…”

Section: Introductionmentioning

confidence: 99%

Broadband and Compact TE-Pass Polarizer Based on Hybrid Plasmonic Grating on LNOI Platform

Dai

Zhao

et al. 2021

IEEE Photonics J.

Self Cite

View full text Add to dashboard Cite

A broadband and compact TE-pass/TM-stop polarizer is presented based on hybrid plasmonic grating (HPG) on an x-cut Lithium-Niobate-on-isolator (LNOI) platform. By comprehensively analyzing the effects of metal width on mode effective index, mode similarity, and mode conversion, we demonstrate the structure with a narrow metal layer. The simulation results indicate that the polarizer with a compact length of 9 m achieves an extinction ratio over 20 dB within the wavelength range from 1470 nm to 1700 nm. The insertion loss is below 2.3 dB in C-band. Furthermore, the polarizer exhibits large fabrication tolerance to current fabrication technology.

show abstract

“…As an important optical element, diffraction grating has the properties of dispersion [1][2][3][4][5][6], beam splitting [7][8][9][10][11], polarization [12][13][14][15][16][17] and phase matching [18][19][20][21][22] and shows a wide range of applications in different fields. For example, diffraction gratings with high dispersion and high diffraction efficiency, such as the core components in laser pulse compression [23], laser frequency selection [24] and spectral beam combining [25] are widely used in high-power laser systems.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of bi-function separation under second Bragg incidence by T-type microstructure

Fu¹,

Wang²

2021

Laser Phys.

View full text Add to dashboard Cite

A one-port reflector for transverse-electric (TE) polarization and a two-port beam splitter for transverse-magnetic (TM) polarization is proposed by T-type double-layer fused-silica grating. After optimization calculations, 97.87% single-order high-efficiency reflection under TE polarization and 48.70%/48.71% highly uniform dual-order beam splitting under TM polarization are finally obtained. In addition, the normalized electric field and magnetic field diagrams of the grating are obtained using the finite element method. Finally, the incident characteristics and process tolerances of the grating are analyzed, and a range of structural parameters that meets good reflection efficiency is found. The design and study of polarization-dependent gratings carried out in this paper are of great significance for increasing the output power of laser systems and improving the stability of optical devices when unpolarized lasers are incident.

show abstract

TiO2-based compact TM-pass polarizer at visible wavelengths with ultra-low power loss

Cited by 10 publications

References 27 publications

Low loss and compact transverse magnetic-pass polarizer on lithium-niobate-on-insulator platform using improved hybrid plasmonic grating

Low loss and compact transverse magnetic-pass polarizer on lithium-niobate-on-insulator platform using improved hybrid plasmonic grating

Broadband and Compact TE-Pass Polarizer Based on Hybrid Plasmonic Grating on LNOI Platform

Modeling and analysis of bi-function separation under second Bragg incidence by T-type microstructure

Contact Info

Product

Resources

About