Explanipedia

Universal loss and gain characterization inside photonic integrated circuits Open

Hao Chen, Ruxuan Liu, G. Koehler, Fatemehsadat Tabatabaei, Xiangwen Guo , et al. · 2025

Integrated photonics has undergone tremendous development in the past few decades, transforming many fields of study in science and technology. Loss and gain are two fundamental elements in photonic circuits and have direct impacts on near…

Integrated lithium niobate photonic computing circuit based on efficient and high-speed electro-optic conversion Open

Yaowen Hu, Yunxiang Song, Xinrui Zhu, Xiangwen Guo, Shengyuan Lu , et al. · 2025

The surge in artificial intelligence applications calls for scalable, high-speed, and low-energy computation methods. Computing with photons is promising due to the intrinsic parallelism, high bandwidth, and low latency of photons. However…

Photonic chip-based optical frequency division with PZT-integrated soliton microcombs Open

Ruxuan Liu, Mark Harrington, Shuman Sun, Fatemehsadat Tabatabaei, Samin Hanifi , et al. · 2025

Optical frequency division (OFD) produces low-noise microwave and millimeter-wave signals by transferring the exceptional stability of optical references to electronic frequency domains. Recent developments in integrated optical references…

Heterogeneous integration of a high-speed photodiode with microcavity solitons for on-chip mmWave generation Open

Junyi Gao, Beichen Wang, Fatemehsadat Tabatabaei, Ruxuan Liu, Samin Hanifi , et al. · 2025

We present a photonically driven on-chip millimeter wave (mmWave) source enabled by the heterogeneous integration of a high-speed InGaAs/InP photodiode and silicon nitride (Si 3 N 4 ) microcavity solitons. The chip delivers mmWaves with −1…

Integrated lithium niobate photonic computing circuit based on efficient and high-speed electro-optic conversion Open

Yaowen Hu, Yunxiang Song, Xinrui Zhu, Xiangwen Guo, Shengyuan Lu , et al. · 2024

Here we show a photonic computing accelerator utilizing a system-level thin-film lithium niobate circuit which overcomes this limitation. Leveraging the strong electro-optic (Pockels) effect and the scalability of this platform, we demonst…

Broadband Optoelectronic Mixer for Terahertz Frequency-Comb Measurements Open

Jizhao Zang, Jesse Morgan, Andréas Beling, Scott B. Papp · 2024

We demonstrate ultra-broadband optoelectronic mixing of frequency combs that provides phase-coherent detection of a repetition frequency up to 500 GHz, using a high-speed modified uni-traveling carrier (MUTC) photodiode. Nonlinear photo-el…

Integrated optical frequency division for microwave and mmWave generation Open

Shuman Sun, Beichen Wang, Kaikai Liu, Mark Harrington, Fatemehsadat Tabatabaei , et al. · 2024

The generation of ultra-low-noise microwave and mmWave in miniaturized, chip-based platforms can transform communication, radar and sensing systems 1–3 . Optical frequency division that leverages optical references and optical frequency co…

Kerr optical frequency division with integrated photonics for stable microwave and mmWave generation Open

Shuman Sun, Mark Harrington, Fatemehsadat Tabatabaei, Samin Hanifi, Kaikai Liu , et al. · 2024

Optical frequency division (OFD) has revolutionized microwave and mmWave generation and set spectral purity records owing to its unique capability to transfer high fractional stability from optical to electronic frequencies. Recently, rapi…

Integrated optical frequency division for stable microwave and mmWave generation Open

Shuman Sun, Beichen Wang, Kaikai Liu, Mark Harrington, Fatemehsadat Tabatabaei , et al. · 2023

The generation of ultra-low noise microwave and mmWave in miniaturized, chip-based platforms can transform communication, radar, and sensing systems. Optical frequency division that leverages optical references and optical frequency combs …

32-channel wide-bandwidth massive RF photonic combiner based on distributed groups of arrayed photodetectors Open

Ta-Ching Tzu, Tasneem Fatema, Keye Sun, Paul A. Morton, Andréas Beling · 2023

We propose and experimentally demonstrate a low-loss, radio frequency (RF) photonic signal combiner with flat response from 1 GHz to 15 GHz and low group delay variation of 9 ps. The distributed group array photodetector combiner (GAPC) is…

Data of Fig.3 and Fig.4 in the paper "Integrated optical frequency division for microwave and mmWave generation" Open

Shuman Sun, Beichen Wang, Kaikai Liu, Mark Harrington, Fatemehsadat Tabatabaei , et al. · 2023

This data file contains all the data for figure 3 and figure 4 in "Integrated optical frequency division for microwave and mmWave generation".

Data of Fig.3 and Fig.4 in the paper "Integrated optical frequency division for microwave and mmWave generation" Open

Shuman Sun, Beichen Wang, Kaikai Liu, Mark Harrington, Fatemehsadat Tabatabaei , et al. · 2023

This data file contains all the data for figure 3 and figure 4 in "Integrated optical frequency division for microwave and mmWave generation".

Special Issue on Advanced Ultra-High Speed Optoelectronic Devices Open

Jin‐Wei Shi, Andréas Beling, Nobuhiko Nishiyama · 2022

The data communication market has recently experienced a boom [...]

Editorial Introduction to JSTQE Special Issue on Optical Detectors Open

J. Capmany, Christina Lim, Kazutosi Kato, Patrick Runge, Andréas Beling · 2022

The papers in this special section focus on optical detectors. The photon to electron conversion is a key operation in photonic systems whether they operate over optical signals or whether optics is employed as an auxiliary technology to i…

Publisher Correction: Ultra-fast germanium photodiode with 3-dB bandwidth of 265 GHz Open

Stefan Lischke, Anna Pęczek, Jesse Morgan, Keye Sun, Daniel Steckler , et al. · 2021

undoped) germanium fin is realized…" caption letter d has been included.In the text now reading "e, Cross-sectional image, obtained by STEM, of a germanium photodiode (termed Ge100_10) that features in situ-doped (different colours for p-a…

Ultra-fast germanium photodiode with 3-dB bandwidth of 265 GHz Open

Stefan Lischke, Anna Pęczek, Jesse Morgan, Keye Sun, Daniel Steckler , et al. · 2021

On a scalable silicon technology platform, we demonstrate photodetectors matching or even surpassing state-of-the-art III–V devices. As key components in high-speed optoelectronics, photodetectors with bandwidths greater than 100 GHz have …

Simple Formulas for Output Interception Power Estimation of Uni-Traveling Carrier Photodiodes Open

Keye Sun, Junyi Gao, Yuan Yuan, Joe C. Campbell, Andréas Beling · 2021

Simple analytical expressions for estimation of second order output intercept point (OIP2) and third order output intercept point (OIP3) of surface normal uni-traveling carrier (UTC) and modified uni-traveling carrier (MUTC) photodiode (PD…

Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons Open

Beichen Wang, Jesse Morgan, Keye Sun, Mandana Jahanbozorgi, Zijiao Yang , et al. · 2021

Photonic generation of pulsed microwave signals in the X-, Ku- and K-band Open

Yiwei Peng, Keye Sun, Yang Shen, Andréas Beling, Joe C. Campbell · 2020

Photonic microwave generation of high-power pulsed signals in the X-, Ku- and K-band using charge-compensated MUTC photodiodes is demonstrated. The impulse photoresponse without modulation showed a maximum peak voltage of 38.3 V and full-w…

Heterogeneous photodiodes on silicon nitride waveguides Open

Qianhuan Yu, Junyi Gao, Nan Ye, Baiheng Chen, Keye Sun , et al. · 2020

Heterogeneous integration through low-temperature die bonding is a promising technique to enable high-performance III-V photodetectors on the silicon nitride (Si 3 N 4 ) photonic platform. Here we demonstrate InGaAs/InP modified uni-travel…

Indium arsenide quantum dot waveguide photodiodes heterogeneously integrated on silicon Open

Bassem Tossoun, Géza Kurczveil, Chong Zhang, Antoine Descos, Zhihong Huang , et al. · 2019

Silicon photonics provides a promising platform for energy-efficient interconnects within supercomputers and data centers. However, developing a complementary metal–oxide–semiconductor compatible high-speed photodetector with low dark curr…

High-Speed Photodetectors for Microwave Photonics Open

Keye Sun, Andréas Beling · 2019

This paper reviews high-power photodiodes, waveguide photodetectors, and integrated photodiode-antenna emitters with bandwidths up to 150 GHz. Results from heterogeneous III-V photodiodes on silicon and Ge-on-Si photodiode arrays for analo…

Low dark current III–V on silicon photodiodes by heteroepitaxy Open

Keye Sun, Daehwan Jung, Chen Shang, Alan Liu, Jesse Morgan , et al. · 2018

Top-illuminated PIN and modified uni-traveling carrier (MUTC) photodiodes based on InGaAs/InAlAs/InP were epitaxially grown on Si templates. Photodiodes with 30-μm diameter have dark currents as low as 10 nA at 3 V corresponding to a dark …

Segmented waveguide photodetector with 90% quantum efficiency Open

Qianhuan Yu, Keye Sun, Qinglong Li, Andréas Beling · 2018

We demonstrate a novel InGaAsP/InP segmented waveguide photodetector based on directional couplers. By matching the imaginary parts of the propagation constants of the even and odd modes, we designed a photodetector with 6 elements, each w…

Photon-number-resolving segmented avalanche-photodiode detectors Open

Rajveer Nehra, Chun-Hung Chang, Andréas Beling, Olivier Pfister · 2017

Photodetectors Open

Andréas Beling, Joe C. Campbell · 2017

In optical communication systems semiconductor photodetectors are used for the optoelectronic conversion of the modulated light signal into the electrical domain. This chapter focuses on p–i–n, metal-semiconductor-metal (MSM), and avalanch…

Chip-scale optical resonator enabled synthesizer (CORES) miniature systems for optical frequency synthesis Open

John E. Bowers, Andréas Beling, Daniel J. Blumenthal, Aaron Bluestone, Steven M. Bowers , et al. · 2016

An approach for a low-power chip-scale package is described, that provides a laser output with a programmable frequency across 50 nm of bandwidth centered at 1550 nm, and a resolution of one part in 10(14).

High-power, high-linearity photodiodes Open

Andréas Beling, Xiaojun Xie, Joe C. Campbell · 2016

Microwave photonics and optics-based analog links are technologies that are being developed for a growing number of applications. Photodetectors that operate at high power levels are key components. Additionally, it is important for many o…

Attosecond timing in optical-to-electrical conversion Open

Fred N. Baynes, Franklyn Quinlan, Tara M. Fortier, Qiugui Zhou, Andréas Beling , et al. · 2015

The most frequency-stable sources of electromagnetic radiation are produced optically, and optical frequency combs provide the means for high-fidelity frequency transfer across hundreds of terahertz and into the microwave domain. A critica…

High-Power Photodiodes for Analog Applications Open

Andréas Beling, Joe C. Campbell, Kejia Li, Qinglong Li, Ye Wang , et al. · 2015

This paper summarizes recent progress on modified uni-traveling carrier photodiodes that have achieved RF output power levels of 1.8 Watt and 4.4 Watt in continuous wave and pulsed operation, respectively. Flip-chip bonded discrete photodi…

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