A5103271872- Optical Network Technologies
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Radio Frequency Integrated Circuit Design
- Advanced Fiber Laser Technologies
- Plasma Diagnostics and Applications
- Silicon Carbide Semiconductor Technologies
- Magnetic confinement fusion research
- graph theory and CDMA systems
- GaN-based semiconductor devices and materials
- Dust and Plasma Wave Phenomena
Xidian University
2025
Soochow University
2024
Infinera (United States)
2017-2018
University of California, Santa Barbara
2013-2015
Illinois Institute of Technology
1989-2003
In this work, an AlN/AlxGa1-xN/GaN graded channel HEMT (AlN. GC HEMT) with enhanced power and linearity performance has been proposed. With the adoption of a strong-polarized AlN barrier AlxGa1-xN channel, current density 1806 mA/mm transconductance (Gm) gate voltage swing (GVS-Gm) 7 V were gained. At 3.6 GHz load pull measurements drain (VDS) 8 V, AlN. exhibited maximum output (Pout) 2.2 W/mm. Two-tone intermodulation distortion measurement further revealed third-order intercept point...
We report InP-based coherent transmitter PICs with hybrid integrated SiGe drivers operating at 100GBd, 32QAM back-to-back (1 Tb/wave capable), and 16QAM over 1400km. Coherent Tx (Rx) (amplifiers) operate 66GBd, 64QAM 200km.
Fully integrated monolithic, multi-channel InP-based coherent receiver PICs and transceiver modules with extended C-band tunability are described. These operate at 33 44 Gbaud per channel under dual polarization (DP) 16-QAM modulation. Fourteen-channel monolithic InP show integration data rate scaling capability to DP modulation for combined 4.9 Tb/s total capacity. Six simultaneous operation of a commercial module is demonstrated variety formats including >1.2Tbit/s aggregate
The coupling effects between the bias power and inductive in RF-biased inductively coupled plasma with synchronous control are investigated by measuring electron energy distribution function using a compensated Langmuir probe. With control, driven at an identical phase frequency. experimental results show that lowers self-bias voltage, while changes density introducing extra absorption dissipation. also enhances beam confinement, leading to increase low pressure. Furthermore, E H mode...
We demonstrate 2-channel Tx and Rx PICs capable of delivering >700Gbps per channel (via 88Gbaud, 16-QAM dual-polarization modulation) over an 80km unamplified link with extended C-band tunability.
A saturated semiconductor-optical-amplifier exhibited 6.3 dB of phase-sensitive gain using two tunable laser pumps coherently injection-locked from sidebands a modulated tone, all integrated on single InP chip.
InP-based <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$4\times 600$</tex> Gb/s capable coherent transmitter and receiver assemblies with hybrid integrated SiGe drivers operate at 66GBd, 64QAM over a 200km link. Additionally, fully packaged pair of modules real-time DSP ASIC operates error free 600Gb/s 69GBd, DP-64QAM.
We describe techniques for phase-locked coherent optical communications, including wavelength synthesis wavelength-division-multiplexed compact BPSK receivers, and demodulation of WDM in the electrical domain. Index Terms - Coherent phase-locked-loops, frequency synthesis, wavelength-division-multiplexing.
We present the first fully monolithically integrated coherent receiver and transmitter PICs in L-band with performance capability comparable to their C-band counterparts, demonstrate a C+L link superchannels under dual-polarization, 16-QAM modulation at 33 GBaud (200 Gbps/λ).
InP photonic integrated circuits continue to play important roles in realization of modern optical communication systems, sensing and free-space systems. In this paper, we report on our recent work advanced modulation format tunable transmitters receivers, as well 2D beam steering PICs.
Uncoded and coded optical pulse position modulation (PPM) systems are compared for both direct heterodyne detection. Simulations of these with different code rates included, the gains obtained in cases reported. By using Reed-Solomon codes, it is seen that performance a system improved over an uncoded As rate reduced, gets better. Among three tested, 1/3 seems to be best choice. The same applies detection system. When codes applied system, observed efficiency improves.< <ETX...
In large-scale digital systems, propagation delay and power consumption of the interconnects are vastly larger than that transistors themselves [1,2]. Reduced consumption, increased capacity is required for interconnects, whether on-chip, between circuit boards, or within large data centers. Here we will consider coherent optical high-capacity, sub-km links At other extreme interconnect length, also briefly alternative approaches reduced CV <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We are reviewing recent results in the development of high performance Indium Phosphide photonic integrated circuits for coherent communications applications. Integrated transmitters and receivers fast wavelength switched applications presented.
Active InP-based photonic ICs can be created with size, weight, power and stability as well system performance metrics superior to discrete solutions in many situations. If produced some volume, the cost much lower. Coherent approaches will greatly improved by use of Photonic Integration, numerous sensor applications may enabled addition higher-spectral-efficiency communications. Close integration control/feedback electronics desirable future PIC - it is required for low-cost Optical Phase...
A power combiner is proposed in which the signaling frames are obtained from a code set formed by nonorthogonal constant-weight codewords. The rate improvements of multiple-diode schemes using presented, as compare to single-diode pulse position modulation (PPM) scheme. Comparisons made assuming same alphabet size, and peak per diode. As function number diodes, optical systems based on this combining scheme shown provide data about 40% higher than conventional orthogonal combiner. Because...