Polarization-independent grating coupler for micrometric silicon rib waveguides

Alonso-Ramos, C.; Zavargo-Peche, L.; Ortega‐Moñux, Alejandro; Halir, Robert; Molina-Fernández, Í.; Cheben, Pavel

doi:10.1364/ol.37.003663

Cited by 23 publications

(20 citation statements)

References 16 publications

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“…For a shallow-etch structure, there is about 30% of power lost in the substrate; and the penetration loss can be more than 50% in a full-etch structure [19]. This can be improved by using reflectors imbedded in the substrate [24][25][26]. As a result, the upward radiated …”

Section: Applications Of Diffraction Regimementioning

confidence: 99%

1D Photonic Crystals: Principles and Applications in Silicon Photonics

Han¹

2018

Theoretical Foundations and Application of Photonic Crystals

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One-dimension (1D) photonic crystals have been widely used in silicon photonics due to its simple structure and multiple working regimes: diffraction, Bragg reflection, and subwavelength regimes. Thanks to recent development of photonic technologies and highresolution lithography, many 1D photonic crystal-assisted silicon integrated devices have been proposed and demonstrated to further increase integration density and improve device performance. This chapter first presents some fundamentals of 1D photonic crystals. An overview of the applications of 1D photonic crystals in silicon photonics is then given including grating couplers, waveguide crossings, multimode interference couplers, polarization-independent directional couplers, hybrid lasers, polarizers, and high-order mode filters, among others. Particular attention is paid to providing insight into the design strategies for these devices.

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Section: Applications Of Diffraction Regimementioning

confidence: 99%

1D Photonic Crystals: Principles and Applications in Silicon Photonics

Han¹

2018

Theoretical Foundations and Application of Photonic Crystals

View full text Add to dashboard Cite

show abstract

“…Such as apodized waveguide Grating couplers [1][2], slot grating couples [3], and other grating couplers [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Subwavelength TE/TM grating coupler based on silicon-on-insulator

Zhang

Yang

Lü

et al. 2015

Infrared Physics & Technology

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“…The insertion loss of these couplers was −3.7 dB, and the back-reflection loss was −14 dB. Alonso-Ramos et al 10 designed an SOI-based dual-polarization grating coupler with a coupling efficiency of −2.8 dB.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient polarization-independent grating coupler used in silica-based hybrid photodetector integration

Liu

Zhang

et al. 2014

Opt. Eng

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A highly efficient polarization-independent output grating coupler was optimized and designed based on silicon-on-insulator used for silica-based hybrid photodetector integration in an arrayed waveguide grating demodulation-integrated microsystem. The finite-difference time-domain (FDTD) method optimizes coupling efficiency by enabling the design of the grating period, duty cycle, etch depth, grating length, and polarization-dependent loss (PDL). The output coupling efficiencies of both the transverse electric (TE) and transverse magnetic (TM) modes are higher than 60% at 1517 to 1605 nm and similar to 67% at around 1550 nm. The designed grating exhibits the desired property at the 3-dB bandwidth of 200 nm from 1450 to 1650 nm and a PDL <0.5 dB of 110 nm from 1513 to 1623 nm. The power absorption efficiency at 1550 nm for TE and TM modes reaches 78% and 70%, respectively. Both the power absorption efficiency of TE mode and that of TM mode are over 70% in a broad band of 1491 to 1550 nm. Disciplines Engineering | Science and Technology Studies Publication DetailsLi, H., Liu, Y., Zhang, M., Zhou, W., Zhang, C., Li, E., Miao, C. & Tang, C. (2014). Highly efficient polarization-independent grating coupler used in silica-based hybrid photodetector integration. Optical Engineering, 53 (5) Abstract. A highly efficient polarization-independent output grating coupler was optimized and designed based on silicon-on-insulator used for silica-based hybrid photodetector integration in an arrayed waveguide grating demodulation-integrated microsystem. The finite-difference time-domain (FDTD) method optimizes coupling efficiency by enabling the design of the grating period, duty cycle, etch depth, grating length, and polarizationdependent loss (PDL). The output coupling efficiencies of both the transverse electric (TE) and transverse magnetic (TM) modes are higher than 60% at 1517 to 1605 nm and ∼67% at around 1550 nm. The designed grating exhibits the desired property at the 3-dB bandwidth of 200 nm from 1450 to 1650 nm and a PDL <0.5 dB of 110 nm from 1513 to 1623 nm. The power absorption efficiency at 1550 nm for TE and TM modes reaches 78% and 70%, respectively. Both the power absorption efficiency of TE mode and that of TM mode are over 70% in a broad band of 1491 to 1550 nm.

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Polarization-independent grating coupler for micrometric silicon rib waveguides

Cited by 23 publications

References 16 publications

1D Photonic Crystals: Principles and Applications in Silicon Photonics

1D Photonic Crystals: Principles and Applications in Silicon Photonics

Subwavelength TE/TM grating coupler based on silicon-on-insulator

Highly efficient polarization-independent grating coupler used in silica-based hybrid photodetector integration

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