A5005740768- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Laser-Plasma Interactions and Diagnostics
- Advanced Optical Sensing Technologies
- Photonic Crystals and Applications
- Neural Networks and Reservoir Computing
- Advanced Fiber Optic Sensors
- Photorefractive and Nonlinear Optics
- Optical Systems and Laser Technology
- Semiconductor Lasers and Optical Devices
- Quantum Information and Cryptography
- Photocathodes and Microchannel Plates
- Mechanical and Optical Resonators
- Laser-Matter Interactions and Applications
- Advanced X-ray Imaging Techniques
- Pulsed Power Technology Applications
- Quantum Computing Algorithms and Architecture
- Structural Behavior of Reinforced Concrete
- Graphene research and applications
- Advanced Fluorescence Microscopy Techniques
- Plasmonic and Surface Plasmon Research
- Ga2O3 and related materials
- Innovative concrete reinforcement materials
Zhejiang University
2018-2025
Zhejiang University of Science and Technology
2022-2025
Photonics (United States)
2025
State Key Laboratory of Modern Optical Instruments
2020-2024
State Key Laboratory on Integrated Optoelectronics
2021-2024
Jiaxing University
2023
Ningbo University
2019-2022
University of California, Irvine
2022
Guilin University of Electronic Technology
2018-2021
China Jiliang University
2008
Abstract Multimode silicon photonics is attracting more and attention because the introduction of higher-order modes makes it possible to increase channel number for data transmission in mode-division-multiplexed (MDM) systems as well improve flexibility device designs. On other hand, design multimode photonic devices becomes very different compared with traditional case fundamental mode only. Since not only but also are involved, one most important things realization effective manipulation,...
Abstract Graphs have provided an expressive mathematical tool to model quantum-mechanical devices and systems. In particular, it has been recently discovered that graph theory can be used describe design quantum components, devices, setups systems, based on the two-dimensional lattice of parametric nonlinear optical crystals linear circuits, different standard photonic framework. Realizing such graph-theoretical hardware, however, remains extremely challenging experimentally using...
Quantum networks provide the framework for quantum communication, clock synchronization, distributed computing, and sensing. Implementing large-scale practical relies on development of scalable architecture integrated hardware that can coherently interconnect many remote nodes by sharing multidimensional entanglement through complex-medium channels. We demonstrate a multichip network based mass-manufacturable integrated-nanophotonic node chips fabricated silicon wafer means complementary...
A compact spectrometer on silicon is proposed and demonstrated with an ultrahigh resolution. It consists of a thermally-tunable ultra-high-Q resonator aiming at resolution array wideband resonators for achieving broadened working window. The present on-chip has footprint as 0.35 mm<sup>2</sup>, realized standard multi-project-wafer foundry processes. measurement results show that the ultra-high ∆<italic>λ</italic> 5 pm wide window 10 nm. dynamic range defined ratio wavelength large 1940,...
A low-loss add-drop microring resonator (MRR) with an ultra-large free spectral range (FSR) is demonstrated by introducing ultra-sharp multimode waveguide bend and bent asymmetrical directional couplers (ADCs). The introduced to achieve a low loss, even small radius (e.g., R = 0.8 μm). ADCs are used suppress the resonance of higher-order modes. For fabricated device, transmission at drop port has narrow 3 dB-bandwidth nm excess loss 1.8 dB. record large FSR 93 achieved best our knowledge.
Abstract Photonic filters are playing a very important role in many applications, including optical interconnects as well sensing. As silicon photonics has provided attractive platform to realize the high integrated intensity and low cost, various silicon‐based on‐chip photonic have been proposed demonstrated past decade. In this paper, we give review of recent progresses based on different structures, Mach‐Zehnder interferometers, microring resonators, waveguide Bragg grating,...
The multi-dimensional multiplexing technology is very promising for further increasing the link capacity of optical interconnects. A 96-channel silicon-based on-chip reconfigurable add-drop multiplexer (ROADM) proposed and demonstrated first time to satisfy demands in hybrid mode/polarization/wavelengthdivision-multiplexing systems. present ROADM consists a six-channel mode/polarization de-multiplexer, 6 × 16 array microring-resonator (MRR)-based wavelength-selective switches, multiplexer....
We propose a digitally tunable dispersion controller (DTDC) for management that shows potential realizing phase correction, waveform generation, beamforming, and pulse sculpting in many photonic systems. The consists of N stages cascaded chirped multimode waveguide gratings (MWGs) as well ( +1) Mach–Zehnder switches (MZSs) on silicon. introduce MWG technology so the reflected light can be separated from input signal even without circulator, which makes it convenient various system...
A silicon-based on-chip add-drop optical filter is realized for the wavelength-band of 2 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> m by integrating a multimode waveguide grating (MWG) and pair two-channel mode (de)multiplexers. The has low loss high sidelobe suppression ratio in broad band, achieved optimizing corrugation depth, apodization strength, as well length. measurement results agree very with theoretical simulation...
A silicon-based four-channel coarse wavelength- division multiplexing (CWDM) (de)multiplexer working in the O-band is proposed and realized. The present on-chip CWDM composed of four cascaded optical filters with flat-top spectral responses, which are realized by combining a multimode waveguide grating (MWG) two-channel mode (de)multiplexer. For ~18-nm channel-spacing, measured 1-dB bandwidth as large 15 nm, ~75% channel spacing. thermal sensitivity also reduced from ~85 pm/°C to 46...
A silicon photonic filter with an ultra-large free spectral range (FSR) is proposed and demonstrated by introducing high-order adiabatic elliptical-microrings (AEMs) bent directional couplers (DCs). For the AEMs, waveguides in non-coupling regions are wide have a minimal bending radius, while coupling relatively narrow maximal radius. Both radius width of AEMs varied adiabatically. Furthermore, DCs used to realize sufficient between access waveguide microring suppress higher-order mode...
A silicon-based polarizing beam splitter (PBS) working at the 2 μm wavelength band is proposed and demonstrated experimentally by using a bent directional coupler assisted with nano-slot waveguide. The width chosen as 180 nm so that present PBS can be fabricated MPW foundries. In theory, designed has extinction ratios (ERs) of >15 dB >30 for TM- TE- polarizations in range 1825-2020 nm, respectively. For PBS, excess losses (ELs) are low (∼0.5 dB) while measured results show ERs >20...
An on-chip quadplexer is proposed and demonstrated with four wavelength-channels of 1270, 1310, 1490, 1577 nm. The present consists cascaded filters based on multimode waveguide grating (MWG), which are composed a two-mode (de)multiplexer an MWG. For the fabricated silicon, all wavelength channels have flat-top responses low excess losses <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mo form="prefix"><</mml:mo> <mml:mn>0.5</mml:mn>...
Ultra-compact silicon photonic filters with box-like responses and high extinction ratios are proposed demonstrated by introducing tenth-order adiabatic elliptical-microrings (AEMs) bent directional couplers. For the AEMs, waveguides in non-coupling regions wide have a minimal bending radius, while coupling narrowed maximal radius. The present based on AEMs show free spectral range as large 37 nm for first time. Even fabricated commercial complementary metal–oxide–semiconductor-compatible...
A low-loss and low-crosstalk silicon triplexer is proposed realized for wavelength-division-multiplexed optical systems with the wavelength channels of 1310, 1490, 1550 nm. The on-chip composed three cascaded multimode-waveguide-grating (MWG)-based filters, which consist an MWG a two-mode (de)multiplexer. For all channels, flat-top spectral responses are achieved experimentally, their 3 bandwidths 89, 19, 7 nm, respectively. excess losses less than 1 dB. crosstalks -36--27 -32--28 dB 1490
A high-performance optical filter is proposed and realized with multimode waveguide grating (MWG) two-mode multiplexers on the x-cut lithium-niobate-on-insulator (LNOI) platform for first time, to best of our knowledge. The present designed appropriately avoid material anisotropy as well mode hybridness, has a low excess loss 0.05 dB high sidelobe suppression ratio (SLSR) 32 in theory Gaussian apodization. fabricated filters show box-like response 1-dB bandwidth 6-23 nm, ∼0.15 dB, >26 dB....
A compact silicon photonic wavelength-selective switch (WSS) based on an array of elliptical microrings with adiabatically varied radii and widths is proposed demonstrated experimentally. 1 × 4 WSS designed realized by integrating four cells sharing the same bus waveguide. Particularly each cell contains microring units corresponding to wavelength-channels. For fabricated WSS, average excess loss at output port all channels measured be less than dB, while crosstalk between adjacent −20 dB....
Abstract A twelve-channel local-area-network (LAN) wavelength-division multiplexing (LWDM) filter is proposed and demonstrated with a uniform channel spacing of 4.5 nm (800 GHz) in the O-band 1270–1330 by using x-cut lithium-niobate-on-insulator (LNOI) photonic waveguides for first time. The present LWDM consists twelve single-channel bandpass filters based on multimode waveguide gratings (MWGs) assisted TE 0 /TE 1 mode (de)multiplexer. In particular, two stages MWGs cascade are introduced...
A silicon-based polarization-insensitive optical filter is proposed and demonstrated. For the present on-chip filter, there a dual-polarization mode (de)multiplexer, TE-type multimode waveguide grating (MWG) with triangular corrugations TM-type MWG rectangular corrugations. Here are introduced to reduce undesired reflection suppress Fabry-Parot resonance. Furthermore, lateral-shift apodization for both two types of MWGs sidelobes. fabricated device, measured 3 dB-bandwidth as large ∼11 nm...
Deep ultraviolet photodetectors play a critical role in applications such as ozone layer monitoring and missile alert systems. This work investigates the potential of graphene quantum dots to enhance deep light photodetection within graphene/Si heterojunction. The addition not only reduces Schottky barrier between Si but also enhances absorption ability by Si. As result, modified junction exhibited exceptional performance metrics, including notable responsivity 0.21 A/W, an impressive...
Abstract 2D materials and their heterostructures exhibit considerable potential in the development of avalanche photodetectors (APDs) with high gain, response, signal‐to‐noise ratio. These hold promise addressing inherent technical challenges associated APDs, such as low light absorption coefficient, elevated noise current, substantial power consumption due to bias resulting only moderate current gain. In this work, a macro‐assembled graphene nanofilm (nMAG)/epitaxial silicon (epi‐Si)...
A compact on-chip reconfigurable multichannel amplitude equalizer based on cascaded elliptical microrings is proposed and demonstrated experimentally. With the optimized structure of microring with adiabatically varied radii/widths, average excess loss for each channel in initialized state measured to be less than 0.5 dB, while attenuation dynamic range can over 20 dB. Flexible tunability through overlapping resonance peaks adjacent wavelength-channels enables even higher ranges up 50...
Silicon photonic integrated circuits with the abilities of large-scale integration and low-cost fabrication are one most promising technologies for various emerging applications. For silicon circuits, which usually polarization-sensitive, polarization-handling is critical importance as a key manipulation light. Basically, ultracompact devices high performances in broad band highly desired. In this paper, review given recent progresses high-performance assisted subwavelength structures...