Coupling performance enhancement using SOI grating coupler design

Sharma, T. K.; Kwon, Hyeokbin; Park, Jongwoo; Han, Seungjun; Son, Gyeongho; Jung, Young-Ho; Yu, Kyoungsik

doi:10.1016/j.optcom.2018.06.012

Cited by 15 publications

(7 citation statements)

References 17 publications

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“…At the same time, the fiber is aligned ~10° to the normal of the grating coupler. It is also possible that the angle of alignment can be tuned to obtain higher coupling efficiency and lower coupling loss [19], [20]. However, due to the limitations in equipment and resources, further investigations in these directions are challenging at this stage of the research.…”

Section: Resultsmentioning

confidence: 99%

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Lim

Zhao

et al. 2021

IEEE Photonics J.

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In this work, silicon photonics structures for the optical addressing of trapped ion is developed for quantum computing applications. Grating-waveguide-grating structures of various designs are designed, and fabricated for various radius curvatures of 12, 15, 25 and 30 µm, respectively. From the optical measurements, gratings with radius of curvature of 25 and 30 µm exhibit lower power loss of 36.5 and 33.9 dB with better-focused beam profiles as compared to those with radius of curvature of 12 and 15 µm. The beam width from these gratings ranges between 17.31 to 41.54 µm, which provides the feasibility to perform optical addressing on 2 to 4 Sr + ions trapped along the ground electrode of the ion trap.

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Section: Resultsmentioning

confidence: 99%

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Lim

Zhao

et al. 2021

IEEE Photonics J.

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“…The result showed that when the SMF had a core diameter of 9 µm, the optimal diameter of the connecting SCF was 14 µm so that 80% of the incident field could be coupled into the fundamental mode of the SCF. To reduce the Fresnel reflection when the SCF and the mid-IR SMF are connected, a micron-structured surface on the end of SCF may suffice with low coupling losses [19,20]. For the second light coupling, a tapered SCF is polished at a certain waist location as shown in Figure 1 but magnified in Figure 2 to create a DSCF in which slot waveguides are built in the flat silicon region to serve as an in-line fiber-based biosensor.…”

Section: Coupling Methodsmentioning

confidence: 99%

“…The result showed that when the SMF had a core diameter of 9 μm, the optimal diameter of the connecting SCF was 14 μm so that 80% of the incident field could be coupled into the fundamental mode of the SCF. To reduce the Fresnel reflection when the SCF and the mid-IR SMF are connected, a micron-structured surface on the end of SCF may suffice with low coupling losses [ 19 , 20 ].…”

Section: Coupling Methodsmentioning

confidence: 99%

Investigation of an In-Line Slot Waveguide Sensor Built in a Tapered D-Shaped Silicon-Cored Fiber

Lin

Wang

2021

Sensors

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An in-line slot waveguide sensor built in a polished flat platform of a D-shaped silicon cored fiber with a taper coupled region is proposed and investigated thoroughly. Simulation results show that the single-mode light field sustained in the silicon cored fiber can be efficiently transferred to the slot waveguides through the tapered region. The geometry parameters of the slot waveguide sensors are optimized to have the corresponding highest power confinement factors and the resultant sensor sensitivities. The three-slot waveguide sensor is found to have the best performance among one-, two- and three-slot waveguides at the mid-IR wavelength.

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“…This shows the Gaussian properties in the propagation of light beam coupled out from the grating structure [3], [12], [13]. At the same time, the presence of multiple beams are observed along x-axis, due to the presence of multiple modes of the 1092 nm light coupled out from the grating structure [14], [15].…”

mentioning

confidence: 91%

Development of Grating for the Optical Addressing of Sr⁺ Ions With Data Analysis Techniques

et al. 2023

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In this study, SiN-based gratings with various radius of curvature (r) are designed and fabricated for the optical addressing of trapped Sr + ion. The beam width of the light coupled out from the gratings is investigated using a self-developed Pythonbased data analysis technique. It is found that the r values have insignificant influence on the beam width along x-axis; whereas the beam waist along y-axis reduces from 13.96 to 12.3 µm as r increases from 15 to 20 µm, then increases gradually to 20.51 µm as the r value further increases to 60 µm. The obtained results can provide a versatile solution on the optical addressing of trapped Sr + for applications in quantum engineering.

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Coupling performance enhancement using SOI grating coupler design

Cited by 15 publications

References 17 publications

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Investigation of an In-Line Slot Waveguide Sensor Built in a Tapered D-Shaped Silicon-Cored Fiber

Development of Grating for the Optical Addressing of Sr⁺ Ions With Data Analysis Techniques

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Coupling performance enhancement using SOI grating coupler design

Cited by 15 publications

References 17 publications

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Investigation of an In-Line Slot Waveguide Sensor Built in a Tapered D-Shaped Silicon-Cored Fiber

Development of Grating for the Optical Addressing of Sr+ Ions With Data Analysis Techniques

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Development of Grating for the Optical Addressing of Sr⁺ Ions With Data Analysis Techniques