Optoelectronics Letters

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Dynamic fragments awareness based virtual network mapping strategy of elastic optical networks
Optoelectronics Letters - Tập 17 Số 7 - Trang 427-431 - 2021
Hongliang Bai, Wenbin Chen, Lin Liu, Jie Zhang, Guangxi Ye
An ultraviolet laser communication system using frequency-shift keying modulation scheme
Optoelectronics Letters - Tập 11 - Trang 65-68 - 2015
Di-yong Peng, Jun Shi, Guang-hui Peng, Sha-li Xiao, Shan-he Xu, Shan Wang, Feng Liu
A communication system based on an ultraviolet (UV) laser at 266 nm is presented to improve the communication distance. The pulse frequency-shift keying (FSK) modulation scheme is studied and improved in order to reduce the bit error rate (BER), and is put into practice on a field programmable gate array (FPGA). The mathematical models of the modulation and demodulation are established. A test pla...... hiện toàn bộ
Multi-frame super-resolution reconstruction based on global motion estimation using a novel CNN descriptor
Optoelectronics Letters - - 2019
Hongxia Gao, Wensheng Xie, Hui Kang, Guangming Lin
Double depth-enhanced 3D integral imaging in projection-type system without diffuser
Optoelectronics Letters - Tập 11 - Trang 166-169 - 2015
Lei Zhang, Xiao-xue Jiao, Yu Sun, Yan Xie, Shao-peng Liu
Integral imaging is a three dimensional (3D) display technology without any additional equipment. A new system is proposed in this paper which consists of the elemental images of real images in real mode (RIRM) and the ones of virtual images in real mode (VIRM). The real images in real mode are the same as the conventional integral images. The virtual images in real mode are obtained by changing t...... hiện toàn bộ
Magnetic field and temperature dependence of the groundstate energy of weak-coupling magnetopolaron in quantum rods with hydrogenic impurity
Optoelectronics Letters - Tập 8 - Trang 237-240 - 2012
Xin Xiao, Wuyunqimuge, Chao Han, Eerdunchaolu
The dependence of the ground-state properties of weak-coupling bound magnetopolarons in quantum rods (QRs) with hydrogenic impurity on magnetic field and temperature is studied by means of the Lee-Low-Pines (LLP) transformation method and Huybrechts linear combination operator method. The expression for the ground-state energy of the magnetopolaron is derived. Results of the numerical calculations...... hiện toàn bộ
Coherent confocal microscope with a phase-only filter in its extended source
Optoelectronics Letters - Tập 2 - Trang 104-106 - 2006
Chu-ping Yang
The phase information of an extended source is reconstructed by use of a two-zone (annular) phase-only filter in a coherent confocal scanning optical microscope. The dependence of its resolution on its source size is investigated theoretically by its three-dimensional optical transfer function (3D OTF). The results show that the resolution is improved, even though the source size is enlarged.
Research on optical fiber magnetic field sensors based on multi-mode fiber and spherical structure
Optoelectronics Letters - - 2017
Yan Wang, Zheng-rong Tong, Wei-hua Zhang, Pan-pan Luan, Yue Zhao, Li-fang Xue
A magnetic field sensor with a magnetic fluid (MF)-coated intermodal interferometer is proposed and experimentally demonstrated. The interferometer is formed by sandwiching a segment of single mode fiber (SMF) between a segment of multi-mode fiber (MMF) and a spherical structure. It can be considered as a cascade of the traditional SMF-MMF-SMF structure and MMF-SMF-sphere structure. The transmissi...... hiện toàn bộ
Optical fiber sensor by cascading long period fiber grating with FBG for double parameters measurement
Optoelectronics Letters - Tập 13 - Trang 372-375 - 2017
Wen Zhang, Xiao-ping Lou, Ming-li Dong, Lian-qing Zhu
An optical fiber sensor for strain and temperature measurement based on long period fiber grating (LPFG) cascaded with fiber Bragg grating (FBG) structure has been proposed and realized both theoretically and experimentally. Theoretical analysis shows that two microstructures with similar sensitivities cannot be used for double parameters measurement. The LPFG is micromachined by the CO2 laser, an...... hiện toàn bộ
Theoretical study of phase-matching properties for tunable terahertz-wave generation in isotropic nonlinear crystals
Optoelectronics Letters - Tập 3 - Trang 152-156 - 2007
Bo Sun, Jian-quan Yao, Bai-gang Zhang, Tie-li Zhang, Peng Wang
Theoretical investigation of the phase-matching properties for the tunable coherent terahertz wave generation in the isotropic semiconductor nonlinear materials of CdTe and GaP is presented according to their optical dispersion properties, based on a pulsed dual-wavelength KTP-OPO operating near degenerate point in the process of the difference frequency mixing. The cross-Reststrahlen band dispers...... hiện toàn bộ
Second harmonic generation of a new nonlinear optical material: urea L-malic acid
Optoelectronics Letters - Tập 2 - Trang 112-114 - 2006
Ding-an Chen, Li Zhu, Yong-hong Hu, Ling-ling Xu, Yi-ping Cui
Second harmonic generation (SHG) of a new organic optical crystal-urea L-malic acid (ULMA) was studied. A comparison of SHG efficiency of ULMA and KDP at a fundamental wavelength of 1064 nm using the Kurtz powder method demonstrated that the second order nonlinear coefficient of ULMA is 1.57 times of that of KDP, and the damage threshold of ULMA is relatively higher. Finally, both Type I and Type ...... hiện toàn bộ
Tổng số: 1,557   
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