Journals >Optoelectronic Technology
Contents
2021
Volume: 41 Issue 3
12 Article(s)
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Research and Trial-Manufacture
Fabrication of Optical Fiber Panel Based on Silicon Microchannel Array
Shuyi LIU, Bingchen YANG, Guozheng WANG, Lianyu LI, and Zhusong JIANG
A new type of optical fiber panel manufacturing method was proposed. Based on the image transmission principle of optical fiber panel， silicon micro-channel array was fabricated by photo-assisted electrochemical method， which was used as the skeleton structure of the optical fiber panel. Silicon dioxide layer was prepaA new type of optical fiber panel manufacturing method was proposed. Based on the image transmission principle of optical fiber panel， silicon micro-channel array was fabricated by photo-assisted electrochemical method， which was used as the skeleton structure of the optical fiber panel. Silicon dioxide layer was prepared on the inner wall of the channel by oxidation process as the fiber cladding. High refractive index glass was filled in the inner wall as the fiber core. The theoretical numerical aperture is 1.37 and the resolution is 57 lp/mm. The optical fiber panel prepared by this method has the advantages of no optical crosstalk， good light collecting capacity， simplicity， easy operation， low cost， capability of effectively improving the number of pixels.The method is expected to become a new method for manufacturing high-resolution and high-quality image transmission devices..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 175 (2021)
Fabrication and Properties of Quantum⁃dot Microstructure Light Guide Plate by Ink⁃jet Printing
Jianhao PAN, Yun YE, Jiangsheng WANG, and Tailiang GUO
Based on the ink⁃jet printing， the high-precision transferring of QDs material and UV glue composite ink were realized. The LGP had regular microstructure morphology， high stability and superior light-emitting effect. The coffee ring was inhibited by adjusting the ratio of UV glue to solvent. To achieve the white balanBased on the ink⁃jet printing， the high-precision transferring of QDs material and UV glue composite ink were realized. The LGP had regular microstructure morphology， high stability and superior light-emitting effect. The coffee ring was inhibited by adjusting the ratio of UV glue to solvent. To achieve the white balance of the LGP， the proportion of red and green QDs and the QDs concentration of the ink were adjusted respectively. A method of six-times printing was proposed which could print the microstructure and prevent the microstructure from being connected in series. The QMS was characterized， the uniformity of the LGP was 80.8%， the average luminance intensity was 2 769cd/m2， the color coordinates was （0.3294，0.3081）， and the color gamut could reach 105% NTSC. This work is conducive to obtain the superior light-emitting effect， low-cost and high-stability QMS LGP..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 180 (2021)
Computational Optical Imaging through Scattering Media by Generative Adversarial Networks
Xiren ZHANG, Hengjing ZHANG, Yaling LUO, and Lifeng YANG
A generative adversarial net framework （GAN） based on the encoding-decoding architecture was proposed and used for computational optical imaging through scattering media. Training data set and testing data sets were generated from the original images.The GAN network proposed was trained with data sets generated by phasA generative adversarial net framework （GAN） based on the encoding-decoding architecture was proposed and used for computational optical imaging through scattering media. Training data set and testing data sets were generated from the original images.The GAN network proposed was trained with data sets generated by phase maps of original images and had the ability of mapping relationship between the speckle pattern and the original image. By experimentally analyzing the quality of scattering imaging with different data sets and under different scattering conditions， it is found that the GAN network has good generalization ability and could be used to realize the computational optical imaging through scattering media. Furthermore， the imaging quality with the three improved loss functions proposed were analyzed and compared. Experimental results showed that the imaging quality was effectively improved using the loss function with the structural similarity function. It is of great significance for computational optical imaging through scattering media by the proposed method..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 185 (2021)
Design of All⁃optical 8⁃3 Line Encoder Based on Cross Phase Modulation of SOA
Kaili HUO, Kaixian LIU, Xinqiao CHEN, and Han DI
The all-optical information processing technology is the key technology in optical communication system. The all-optical 8-3 line encoder is the key device in all-optical signal processing. The all-optical 8-3 line encoder could be realized based on the cascade of OR gates.Using the cross phase modulation effect （XPM） The all-optical information processing technology is the key technology in optical communication system. The all-optical 8-3 line encoder is the key device in all-optical signal processing. The all-optical 8-3 line encoder could be realized based on the cascade of OR gates.Using the cross phase modulation effect （XPM） based on semiconductor optical amplifier （SOA）， an all-optical OR gate was firstly designed and implemented， and then the all-optical 8-3 line encoder was designed.The feasibility of the designed all-optical OR gate and all-optical 8-3 line encoder was verified by using the OptiSystem photon simulation software. The all-optical 8-3 line encoder could be realized without the filter， so the design cost could be reduced， showing good application prospects in the future all-optical information processing..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 192 (2021)
Analysis of Beam Emission Control Strategy during Laser Propulsion
Chunyan CHEN, Si LIU, and Xinbing WANG
Atmospheric turbulence and diffraction could cause the laser beam to diverge， which could affect the performance of laser propulsion. In laser propulsion， the size of the laser spot must cover the diameter of the lightship. The size of the laser spot reaching the lightship was used as the standard to analyze the influeAtmospheric turbulence and diffraction could cause the laser beam to diverge， which could affect the performance of laser propulsion. In laser propulsion， the size of the laser spot must cover the diameter of the lightship. The size of the laser spot reaching the lightship was used as the standard to analyze the influence of atmospheric turbulence and diffraction on the beam divergence during CO2 laser propulsion. The analysis showed that in the case of weak turbulence， the laser zoom launch system ensured that the beam could cover the surface of the lightship during laser propulsion. For laser beams with different beam quality factors， the minimum aperture of the launching system and the relationship between the focal length of the launching system and the distance of the lightship were obtained..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 199 (2021)
Arbitrary⁃oriented PCB Defect Detection via Rotation Proposals
Guohua FAN
A deep learning model for detecting PCB defects based on arbitrary-oriented object detection was proposed， which could simplify the whole process by avoiding image registration and image pre-processing. This model had two new components， including a Rotation Region Proposal Network （RRPN） and a Rotation Region-of-InterA deep learning model for detecting PCB defects based on arbitrary-oriented object detection was proposed， which could simplify the whole process by avoiding image registration and image pre-processing. This model had two new components， including a Rotation Region Proposal Network （RRPN） and a Rotation Region-of-Interest （RRoI） pooling layer. Experiment results validated the effectiveness of the proposed model by achieving 97.2% mAP on perturbated DeepPCB dataset..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 203 (2021)
DOE Design for Producing Controllable Interference Fringe
Xin WANG, Guoqiang LYU, Zi WANG, Biao ZHU, Ye YUAN, and Qibin FENG
Diffractive optical elements （DOEs） are used to directly modulate a laser beam to produce controllable interference fringe for the recording of a volume holographic grating. An optimization algorithm based on Gerchberg-Saxton （GS） algorithm was proposed to improve the output light field. The simulation results showed tDiffractive optical elements （DOEs） are used to directly modulate a laser beam to produce controllable interference fringe for the recording of a volume holographic grating. An optimization algorithm based on Gerchberg-Saxton （GS） algorithm was proposed to improve the output light field. The simulation results showed that the fringe uniformity produced by the optimized DOE increased from 80.15% to 88.06%， the fringe contrast increased from 28.42 to 68.95， and the error function reduced from 8.26% to 5.24%. The experimental results based on liquid crystal spatial light modulator showed that the fringe contrast and fringe uniformity obtained by this algorithm were improved compared with GS algorithm.The proposed optimization design method could help increase the practicality of using an DOE to record volume holographic grating..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 207 (2021)
Drawing Design Optimization of IGZO TFT
Guozhi WANG, Yong LIU, Jian WANG, Wei ZHU, and Zhoushuo CHU
In the four mask technology based on IGZO TFT-LCD， the influence of drawing design of thin film transistor on actual pattern was studied， and the influence trends of different channel length design and compensation design was obtained on the trailing，shrinkage and film thickness of photoresist in channel area after halIn the four mask technology based on IGZO TFT-LCD， the influence of drawing design of thin film transistor on actual pattern was studied， and the influence trends of different channel length design and compensation design was obtained on the trailing，shrinkage and film thickness of photoresist in channel area after halftone mask lithography. Results showed that when the value of L was increased from 3 μm to 10 μm， the shrinkage of photoresist was bigger， trailing of photoresist was smaller，and the thickness of photoresist was thinner. However， when L>10 μm， the photoresist shrinkage，trailing and film thickness tended to be stable.Based on the trends above， the effect of the shrinkage and trailing of photoresist could be effectively improved by optimizing the design of channel length and drawing compensation design，and at the same time，the appropriate channel photoresist thickness could be obtained..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 218 (2021)
Research on Air Electrostatic Discharge Problem Based on Rugged Display
Li ZHAO, Guangteng WANG, and Jianjun CHEN
A bright line appeared on the display screen of a rugged display in air Electrostatic Discharge （ESD） 15 kV test. For the problem， an effective rectification method was proposed，which was to deal with the lap joint between the coated shielding glass and the shell of rugged display. It was included that：（1）The ITO film A bright line appeared on the display screen of a rugged display in air Electrostatic Discharge （ESD） 15 kV test. For the problem， an effective rectification method was proposed，which was to deal with the lap joint between the coated shielding glass and the shell of rugged display. It was included that：（1）The ITO film layer should be bare or have silver paste edge for the edge lap joint mode of the coated shielding glass， （2） The thickness of the conductive pads at the gap between the coated shielding glass and the shell of rugged display should increase in the case that the display effect could not be affected. The experiment results showed that： this method could make the rugged display pass the air ESD 15 kV test easily. It could also provide technical support for air electrostatic discharge design of subsequent rugged displays，showing important practical significance..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 223 (2021)
Research on Display Viewing Angle Narrowing Based on Polarizer
Zhongjie LI, and Shengdong ZHANG
In view of the need to protect privacy in public places， special displays need to have narrow viewing angle function，and a new type of polarizer was designed. By adding anti-peeping layer， a polarizer with narrow viewing angle function was realized. By using the anti-peeping layer grating slice to block the large angleIn view of the need to protect privacy in public places， special displays need to have narrow viewing angle function，and a new type of polarizer was designed. By adding anti-peeping layer， a polarizer with narrow viewing angle function was realized. By using the anti-peeping layer grating slice to block the large angle of light and retain the small angle of light， the purpose of anti-peeping was achieved.The results showed that the proposed new polarizer could reduce the viewing angle of the display from 160° to 60°..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 228 (2021)
Obscuration Ratio Study on Cassegrain Condenser
Yucan LU, Yincong XIA, Liangliang YANG, Huan YAN, Xiao LYU, and Furong LI
For solving the problem of secondary lens occlusion in Cassegrain solar condenser， a lens correction method was proposed to reduce the obscuration ratio. On the basis of the traditional concentration ratio and obscuration ratio formula， the correction formulas were proposed. A Cassegrain condenser was analyzed with ZemFor solving the problem of secondary lens occlusion in Cassegrain solar condenser， a lens correction method was proposed to reduce the obscuration ratio. On the basis of the traditional concentration ratio and obscuration ratio formula， the correction formulas were proposed. A Cassegrain condenser was analyzed with Zemax software， the concentration ratio was 280， and the obscuration ratio was 0.33.The results showed that using lens correction method， the obscuration ratio of the designed Cassegrain condenser was reduced by 36.36%， the concentration ratio of the condenser was improved， and the spot distribution on the receiver surface was more uniform..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 233 (2021)
Study Report
Research Progress of Opto⁃molecular Devices Materials
Renhan LI, Bohuai XIAO, Chen CHEN, Zhe WANG, Haijian CHEN, and Gongming QIAN
The research progress of photoelectric molecules materials was summarized， such as photochromic molecules， aggregation-induced luminescence （AIE） molecules and solar molecules from the perspective of single-molecule electrical conductivity. Next， molecular devices designed based on the electrical properties of photoeleThe research progress of photoelectric molecules materials was summarized， such as photochromic molecules， aggregation-induced luminescence （AIE） molecules and solar molecules from the perspective of single-molecule electrical conductivity. Next， molecular devices designed based on the electrical properties of photoelectric molecules were systematically introduced， and the advantages and shortcomings of photoelectric molecules for molecular devices were also discussed. Then the charge transport mechanism of photoelectric molecules was explored， which could provide an effective basis for further elucidating the conformational relationship between the structure and properties of photoelectric molecules. Moreover， it would provide an effective basis for the design of optoelectronic functional molecular devices at the single molecule level..
Optoelectronic Technology
- Publication Date: Sep. 30, 2021
- Vol. 41, Issue 3, 167 (2021)
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