A5069345210- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Advanced Photonic Communication Systems
- Soil erosion and sediment transport
- Pharmaceutical and Antibiotic Environmental Impacts
- Hydrology and Watershed Management Studies
- Pesticide and Herbicide Environmental Studies
- Hydrology and Sediment Transport Processes
- Plant and fungal interactions
- Advanced Optical Sensing Technologies
- Photonic Crystals and Applications
- Energy, Environment, Economic Growth
- Microwave Engineering and Waveguides
- Autoimmune and Inflammatory Disorders
- Celiac Disease Research and Management
- Optical Coatings and Gratings
- Soil Carbon and Nitrogen Dynamics
- Energy, Environment, and Transportation Policies
- Spectroscopy and Laser Applications
- Advanced Fiber Optic Sensors
- Forest, Soil, and Plant Ecology in China
- Eosinophilic Esophagitis
- Market Dynamics and Volatility
- Plant Ecology and Soil Science
Chinese Academy of Sciences
2012-2020
Institute of Semiconductors
2018-2020
University of Chinese Academy of Sciences
2014-2020
Institute of Mountain Hazards and Environment
2014-2017
Research Center for Eco-Environmental Sciences
2016
Microbiology Institute of Shaanxi
2012
Institute of Microbiology
2012
We report a novel single-cavity dual-wavelength laser that has two distributed Bragg reflector (DBR) gratings at each side of gain section for THz communication applications. By varying the inject current one DBR gratings, optical beat frequency can be widely tuned. In device, high-speed electro-absorption modulator (EAM) is also integrated and used up to 25 Gb/s data modulation.
We report a high speed directly modulated widely tunable dual wavelength distributed feedback (DFB) laser for THz communication application. The separation between the two modes can be thermally tuned 96 GHz and 1510 GHz. device by data at up to 25 Gb/s rate, which facilitates modulation in system. emits 1.3 μm wavelength, helps increase transmission distance of high-speed baseband fibers lowers request tuning range obtain same frequency when compared with 1.5 devices. presented results show...
We present data transmission using a directly modulated distributed Bragg reflector (DBR) laser having an integrated Ti thin film heater in the DBR section and butt-jointed InGaAsP as material. By combining current tuning thermal effects, over 16 nm wavelength range is obtained. 5 Gb/s transmissions are conducted at up to 25 km distance different wavelengths. In fabricated device, material also used for formation of photodiode monitoring light power device.
Based on the annual data from 1980 to 2014, path analysis model was employed investigate influence of gross domestic product (GDP), total population (TP), and net export value (NEV) energy consumption (TEC) in China. The results showed that (1) GDP, influenced 59.73% TEC, played most important role affect TEC. Meanwhile, 37.69% TEC directly determined by 22.04% indirectly GDP through TP NEV. (2) secondary factor TEC; 6.02% TP, 15.20% affected TP. Moreover, 21.22% associated with (3) NEV had...
Agricultural lands around the globe have been seriously affected by soil erosion and resultant on- off-site eco-environmental problems. Quantitative assessment of sediment redistribution allows for explicit understanding effects natural anthropogenic agents on catchment delivery. To this end, at field scales in two agricultural regions Sichuan Hilly Basin southwestern China Central Russian Upland was comprehensively assessed using multiple approaches including 137Cs tracing, morphology...
A novel optical antenna for integrated LIDAR with phased arrays is proposed and simulated. HCG structure used to achieve extremely efficient emission. The emission efficiency as high 93.94% at 1550 nm, which exceeds 50% in a range of wavelength from 1480 nm 1620 nm. can perfect grating lobe suppression background 28.4dB when the phase difference between adjacent waveguides 0. 16-wire easily scan ±22.8°×20.2° beam width 2.4°×2.5°, by employing proposed.
With the development of automatic driving and remote sensing technology, light detection ranging (LIDAR) has attracted more attentions. The optical phased arrays in silicon photonics have became one major solutions LIDAR due to its low material cost, high integration, compatibility with CMOS technology. However, most antennas used by are directly etched second-order gratings on array waveguides, which makes emission efficiency very low, a large part energy is wasted side lobes grating lobes....