Frontiers of Optoelectronics

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Heuristic polling sequence to enhance sleep count of EPON
Frontiers of Optoelectronics - Tập 12 - Trang 422-432 - 2019
Bhargav Ram Rayapati, Nakkeeran Rangaswamy
Next-generation passive optical networks (PONs) demand power conservation to create a green environment. A reduction in power consumption of the traditional Ethernet passive optical network (EPON) can be achieved by increasing the sleep count in optical network units (ONUs). In this paper, this is accomplished by introducing a first-in-last-out (FILO) polling sequence in the place of a fixed polli...... hiện toàn bộ
A simple unilateral homogenous PhOLEDs with enhanced efficiency and reduced efficiency roll-off
Frontiers of Optoelectronics - Tập 6 - Trang 435-439 - 2013
Shaoqing Zhuang, Wenzhi Zhang, Xiao Yang, Lei Wang
In this paper, highly efficient phosphorescent organic lighting emitting diodes (PhOELDs) with low efficiency roll-off are demonstrated by using a unilateral homogenous device structure with wide band-gap material 4, 4′, 4″-tri(N-carbazolyl)-triphenylamine (TCTA) as hole transporting layer and emitting layer (EML). The optimized blue device exhibits a high power efficiency of 40 lm/W, external qua...... hiện toàn bộ
Medium chromatic dispersion calculation and correction in spectral-domain optical coherence tomography
Frontiers of Optoelectronics - Tập 10 - Trang 323-328 - 2017
Vasily A. Matkivsky, Alexander A. Moiseev, Sergey Yu. Ksenofontov, Irina V. Kasatkina, Grigory V. Gelikonov, Dmitry V. Shabanov, Pavel A. Shilyagin, Valentine M. Gelikonov
A method for determining and correcting distortions in spectral-domain optical coherence tomography images caused by medium dispersion was developed. The method is based on analysis of the phase distribution of the interference signal recorded by an optical coherence tomography device using an iterative approach to find and compensate for the effect of a medium’s chromatic dispersion on point-spre...... hiện toàn bộ
All-solid anti-resonant single crystal fibers
Frontiers of Optoelectronics - Tập 15 - Trang 1-9 - 2022
Jinmin Ding, Fanchao Meng, Xiaoting Zhao, Xin Wang, Shuqin Lou, Xinzhi Sheng, Luyun Yang, Guangming Tao, Sheng Liang
In this paper, a novel all-solid anti-resonant single crystal fiber (AR-SCF) with high refractive index tubes cladding is proposed. By producing the cladding tubes with high refractive index material, the AR guiding mechanism can be realized for the SCF, which can reduce the mode number to achieve single-mode or few-mode transmission. The influences of different materials and structures on the con...... hiện toàn bộ
2D materials as a new platform for photonic applications
Frontiers of Optoelectronics - Tập 13 - Trang 89-90 - 2020
Jianji Dong, Zhipei Sun
Enabling technologies and challenges for transmission of 400 Gb/s signals in 50 GHz channel grid
Frontiers of Optoelectronics - Tập 6 - Trang 30-45 - 2012
Xiang Zhou
This paper reviewed the recent progress in transmission of 400 Gb/s, wavelength-division-multiplexed (WDM) channels for optical networks based on the standard 50 GHz grid. We discussed the enabling modulation, coding, and line system technologies, as well as the existing challenges. It is shown that, 400 Gb/s per channel signal can be transmitted on the standard 50 GHz ITU-T grid at 8.4 b/ds/Hz ne...... hiện toàn bộ
Widely tunable and high resolution mid-infrared laser based on BaGa4Se7 optical parametric oscillator
Frontiers of Optoelectronics - Tập 16 - Trang 1-7 - 2023
Qing Ye, Hui Kong, Jintian Bian, Jiyong Yao, Enlong Wang, Yunlong Wu, Haiping Xu, Kaihua Wen, Yihua Hu
The widely tunable and high resolution mid-infrared laser based on a BaGa4Se7 (BGSe) optical parametric oscillator (OPO) was demonstrated. A wavelength tuning range of 2.76–4.64 μm and a wavelength tuning resolution of about 0.3 nm were obtained by a BGSe (56.3°, 0°) OPO, which was pumped by a 1064 nm laser. It is the narrowest reported wavelength tuning resolution for BGSe OPO, and was obtained b...... hiện toàn bộ
Integrated contra-directionally coupled chirped Bragg grating waveguide with a linear group delay spectrum
Frontiers of Optoelectronics - Tập 16 - Trang 1-9 - 2023
Xudong Gao, Zhenzhu Xu, Yupeng Zhu, Chengkun Yang, Shoubao Han, Zongming Duan, Fan Zhang, Jianji Dong
Due to the advantages of low propagation loss, wide operation bandwidth, continuous delay tuning, fast tuning speed, and compact footprints, chirped Bragg grating waveguide has great application potential in wideband phased array beamforming systems. However, the disadvantage of large group delay error hinders their practical applications. The nonlinear group delay spectrum is one of the main fact...... hiện toàn bộ
A special issue on Optoelectronics for Energy
Frontiers of Optoelectronics - Tập 11 - Trang 315-316 - 2019
Yan Shen
Silicon waveguide cantilever displacement sensor for potential application for on-chip high speed AFM
Frontiers of Optoelectronics - Tập 11 - Trang 53-59 - 2018
Peng Wang, Aron Michael, Chee Yee Kwok
This paper reviews an initial achievement of our group toward the development of on-chip parallel high-speed atomic force microscopy (HS-AFM). A novel AFM approach based on silicon waveguide cantilever displacement sensor is proposed. The displacement sensing approach uniquely allows the use of nano-scale wide cantilever that has a high resonance frequency and low spring constant desired for on-ch...... hiện toàn bộ
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