Hybrid III–V/SOI resonant cavity enhanced photodetector

Learkthanakhachon, Supannee; Taghizadeh, Alireza; Park, Gyeong Cheol; Yvind, Kresten; Chung, Il-Sug

doi:10.1364/oe.24.016512

Cited by 18 publications

(9 citation statements)

References 33 publications

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“…4(a), the proposed structure consists of two DBRs as outer mirrors and a HG as a coupling mirror. The HG, which is composed of a Si grating layer and a cap layer made of III-V semiconductors, is a variant of HCG 16, 32, 33 . The reflection properties of HGs are similar to those of HCGs 16 .…”

Section: Resultsmentioning

confidence: 99%

“…Finally, metal contacts are formed. The wafer-bonding can be feasibly done with a high yield in several ways, e.g., direct wafer-bonding as we did for hybrid Si-on-chip lasers and photodetectors 26, 31, 33 , or transfer-printing process 35, 36 . It is noted that the field strength within the cap layer can be very strong.…”

Section: Resultsmentioning

confidence: 99%

“…It is noted that the field strength within the cap layer can be very strong. Thus, the optical gain sufficient for lasing can be generated, provided that the cap layer includes a gain material 33 . In this work, however, it is assumed that the cap layer does not include a gain material, focusing solely on the tuning properties.…”

Section: Resultsmentioning

confidence: 99%

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Dynamical dispersion engineering in coupled vertical cavities employing a high-contrast grating

Taghizadeh

Chung

2017

Sci Rep

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Photon’s effective mass is an important parameter of an optical cavity mode, which determines the strength of light-matter interaction. Here, we propose a novel method for controlling the photon’s effective mass by using coupled photonic cavities and designing the angular dependence of the coupling strength. This can be implemented by employing a high-contrast grating (HCG) as the coupling reflector in a system of two coupled vertical cavities, and engineering both the HCG reflection phase and amplitude response. Several examples of HCG-based coupled cavities with novel features are discussed, including a case capable of dynamically controlling the photon’s effective mass to a large extent while keeping the resonance frequency same. We believe that full-control and dynamical-tuning of the photon’s effective mass may enable new possibilities for cavity quantum electrodynamics studies or conventional/polariton laser applications. For instance, one can dynamically control the condensate formation in polariton lasers by modifying the polariton mass.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Dynamical dispersion engineering in coupled vertical cavities employing a high-contrast grating

Taghizadeh

Chung

2017

Sci Rep

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“…In the FMM, which is also referred to as rigorous coupled wave analysis (RCWA), the eigenmodes are expanded using a Fourier basis. The FMM has been used widely for investigating gratings [23][24][25][26][27][28], since the Fourier basis is particularly suitable for periodic structures. Nonetheless, by introducing perfectly matched layers (PMLs) at the boundaries of simulation domains, the FMM has been successfully employed for studying various non-periodic structures such as dielectric waveguides [20,29,30], photonic crystals waveguides [31,32], finite gratings [33], microdisks [34,35], and vertical cavities [36,37].…”

Section: Numerical Solution: Fourier Modal Methodsmentioning

confidence: 99%

Plasmons in ultra-thin gold slabs with quantum spill-out: Fourier modal method, perturbative approach, and analytical model

Taghizadeh¹,

Pedersen²

2019

Opt. Express

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We numerically study the effect of the quantum spill-out (QSO) on the plasmon mode indices of an ultra-thin metallic slab, using the Fourier modal method (FMM). To improve the convergence of the FMM results, a novel nonlinear coordinate transformation is suggested and employed. Furthermore, we present a perturbative approach for incorporating the effects of QSO on the plasmon mode indices, which agrees very well with the full numerical results. The perturbative approach also provides additional physical insight, and is used to derive analytical expressions for the mode indices using a simple model for the dielectric function. The analytical expressions reproduce the results obtained from the numerically-challenging spill-out problem with much less effort and may be used for understanding the effects of QSO on other plasmonic structures.

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“…The direct epitaxial growth PDs is an optimal on-chip PD design, which has the highest optical coupling efficiency. However, most PDs are made of group III–V materials [ 7 , 8 , 9 , 10 ]. In addition, the lattice mismatch of group III–V and Si materials is relatively large, which is not conducive to the high-quality monolithic integration of photonic chips.…”

Section: Introductionmentioning

confidence: 99%

Silicon Waveguide Integrated with Germanium Photodetector for a Photonic-Integrated FBG Interrogator

Zhang

et al. 2020

Nanomaterials

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We report a vertically coupled germanium (Ge) waveguide detector integrated on silicon-on-insulator waveguides and an optimized device structure through the analysis of the optical field distribution and absorption efficiency of the device. The photodetector we designed is manufactured by IMEC, and the tests show that the device has good performance. This study theoretically and experimentally explains the structure of Ge PIN and the effect of the photodetector (PD) waveguide parameters on the performance of the device. Simulation and optimization of waveguide detectors with different structures are carried out. The device’s structure, quantum efficiency, spectral response, response current, changes with incident light strength, and dark current of PIN-type Ge waveguide detector are calculated. The test results show that approximately 90% of the light is absorbed by a Ge waveguide with 20 μm Ge length and 500 nm Ge thickness. The quantum efficiency of the PD can reach 90.63%. Under the reverse bias of 1 V, 2 V and 3 V, the detector’s average responsiveness in C-band reached 1.02 A/W, 1.09 A/W and 1.16 A/W and the response time is 200 ns. The dark current is only 3.7 nA at the reverse bias voltage of −1 V. The proposed silicon-based Ge PIN PD is beneficial to the integration of the detector array for photonic integrated arrayed waveguide grating (AWG)-based fiber Bragg grating (FBG) interrogators.

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Hybrid III–V/SOI resonant cavity enhanced photodetector

Cited by 18 publications

References 33 publications

Dynamical dispersion engineering in coupled vertical cavities employing a high-contrast grating

Dynamical dispersion engineering in coupled vertical cavities employing a high-contrast grating

Plasmons in ultra-thin gold slabs with quantum spill-out: Fourier modal method, perturbative approach, and analytical model

Silicon Waveguide Integrated with Germanium Photodetector for a Photonic-Integrated FBG Interrogator

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