1.5-Gbit/s Filter-free Optical Communication Link based on Wavelength-selective Semipolar   ( 20   21 ¯ ) InGaN/GaN Micro-photodetector

Kang, Chun Hong; Liu, Guangyu; Lee, Changmin; Alkhazragi, Omar; Wagstaff, Jonathan M.; Li, Kuang-Hui; Alhawaj, Fatimah; Ng, Tien Khee; Speck, James S.; Nakamura, Shuji; DenBaars, Steven P.; Ooi, Boon S.

doi:10.1364/cleo_si.2020.sm3r.5

Cited by 2 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In terms of detector research. In 2020 [16] , the Laboratory of Photonics at King Abdullah University of Science and Technology (KAUST) in the Kingdom of Saudi Arabia reported a wavelength-selective semi-polar InGaN/GaN microphoto detector with a bandwidth of 293.52 MHz, the data rate of 1.5 Gbps was achieved without the need for a frequencyefficient modulation format. In 2022 [17] , the University of Edinburgh in the U.K. improved the sensitivity of visible optical communication by using single-photon avalanche diode (SPAD) arrays.…”

Section: Research On New Light Sources and Sensitive Detectorsmentioning

confidence: 99%

The research progress in underwater wireless optical communication technology

Han¹,

Nie²,

Chang³

et al. 2023

First International Conference on Spatial Atmospheric Marine Environmental Optics (SAME 2023)

View full text Add to dashboard Cite

Underwater wireless optical communication, which is an effective technical way to build a high-speed and flexible underwater wireless communication network due to its large bandwidth, good confidentiality and low time delay, is widely regarded as a complementary communication way to hydroacoustic communication. The newest research progress and main technical specification in the current technology of underwater wireless optical communication are introduced, the characteristics of the current underwater wireless optical communication technology are summarized in this paper. A series of improvement measures are proposed for the problems of short communication distance and low robustness in underwater wireless optical communication system, which can provide references for underwater wireless optical communication technology research and engineering project development.

show abstract

Section: Research On New Light Sources and Sensitive Detectorsmentioning

confidence: 99%

The research progress in underwater wireless optical communication technology

Han¹,

Nie²,

Chang³

et al. 2023

First International Conference on Spatial Atmospheric Marine Environmental Optics (SAME 2023)

View full text Add to dashboard Cite

show abstract

“…The emergence of highly integrated silicon-based photonic platforms has led to extensive applications in the semiconductor and telecommunications industries. However, despite allowing large-volume manufacturing at relatively low cost, the energy bandgap located near 1.14 eV hinders the integration of devices requiring optical transparency in the ultraviolet (UV) and visible regimes, such as visible-light and deep-UV (DUV) photodetectors, [1][2][3][4] group-III-V-based lightemitting diodes, [5][6][7][8] solar cells, 9 electro-absorption modulators, [10][11][12] and transparent thin-film transistors. [13][14][15] Despite significant efforts to realize the heterogeneous integration of the aforementioned devices on silicon-based platforms, [16][17][18][19] challenges related to high defect densities, optical coupling, wafer bonding, and substrate removal remain critical and can lead to consequential overhead production costs.…”

Section: Introductionmentioning

confidence: 99%

Single-Crystalline All-Oxide α–γ–β Heterostructures for Deep-Ultraviolet Photodetection

Kang

Min

et al. 2020

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Recent advancements in gallium oxide (Ga2O3)-based heterostructures have allowed optoelectronic devices to be used extensively in the fields of power electronics and deep-ultraviolet (DUV) photodetection. While most previous research has involved realizing single-crystalline Ga2O3 layers on native substrates for high conductivity and visible-light transparency, presented and investigated herein is a single-crystalline β-Ga2O3 layer grown on an α-Al2O3 substrate through an interfacial γ-In2O3 layer. The single-crystalline transparent-conductive-oxide layer made of wafer-scalable γ-In2O3 provides the high carrier transport, visible-light transparency, and antioxidation properties that are critical for realizing vertically oriented heterostructures for transparent-oxide photonic platforms. Physical characterization based on X-ray diffraction and high-resolution transmission electron microscopy imaging confirms the single-crystalline nature of the grown films and the crystallographic orientation relationships among the monoclinic β-Ga2O3, cubic γ-In2O3, and trigonal α-Al2O3, while the elemental composition and sharp interfaces across the heterostructure are confirmed using Rutherford backscattering spectrometry.Furthermore, the energy-band offsets are determined using X-ray photoelectron spectroscopy at the β-Ga2O3/ γ-In2O3 interface, elucidating a type-II heterojunction with conduction-and valenceband offsets of 0.16 and 1.38 eV, respectively. Based on the single-crystalline β-Ga2O3/ γ-In2O3/ α-Al2O3 all-oxide heterostructure, a vertically oriented DUV photodetector is fabricated that exhibits a high photoresponsivity of 94.3 A/W, an external quantum efficiency of 4.6×10 4 % and a specific detectivity of 3.09×10 12 Jones at 250 nm. The present demonstration lays a strong foundation for and paves the way to future all-oxide-based transparent photonic platforms.

show abstract

1.5-Gbit/s Filter-free Optical Communication Link based on Wavelength-selective Semipolar ( 20 21 ¯ ) InGaN/GaN Micro-photodetector

Abstract: We report on wavelength-selective semipolar (2021) InGaN/GaN micro-photodetector with broad modulation bandwidth of 293.52 MHz, outperforming polar-based devices. A 1.5-Gbit/s data rate was achieved without the need of spectral-efficient modulation format.

Cited by 2 publications

References 4 publications

The research progress in underwater wireless optical communication technology

The research progress in underwater wireless optical communication technology

Single-Crystalline All-Oxide α–γ–β Heterostructures for Deep-Ultraviolet Photodetection

Contact Info

Product

Resources

About