Search Results - "stochastic parallel gradient descent (SPGD) algorithm"

Distributed active phase-locking of an all-fiber structured laser array by a stochastic parallel gradient descent (SPGD) algorithm by Chang, Hongxiang, Su, Rongtao, Long, Jinhu, Chang, Qi, Ma, Pengfei, Ma, Yanxing, Zhou, Pu

“…Coherent beam combining (CBC) of fiber laser array is a promising way to achieve high output power. Phase control is one key point to implement CBC…”
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A Secondary Mirror Alignment Method For Segmented Telescopes Using A Wavefront Sensor-less Method by Li, Min, Liu, Xin, Zhang, Ang, Zhang, Junbo, Xian, Hao

“… In this paper, a two-step alignment method using an improved stochastic parallel gradient descent (SPGD…”
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Over-the-Air Phased Array Calibration Based on the SPGD Algorithm by Wang, Xiaobin, Gong, Zhishuang, Ge, Guangding, Ma, Ji, Wang, Yong

“…) phased array calibration method by an iterative stochastic parallel gradient descent (SPGD) algorithm. During the measurement, all the phased array elements…”
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Coherent Beam Combining of Fiber Amplifiers Using Stochastic Parallel Gradient Descent Algorithm and Its Application by Zhou, Pu, Liu, Zejin, Wang, Xiaolin, Ma, Yanxing, Ma, Haotong, Xu, Xiaojun, Guo, Shaofeng

“…We present theoretical and experimental research on coherent beam combining of fiber amplifiers using stochastic parallel gradient descent (SPGD) algorithm…”
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Restoration of Degraded Images Using Pupil-Size Diversity Technology With Stochastic Parallel Gradient Descent Algorithm by Xie, Zongliang, Ma, Haotong, Qi, Bo, Ren, Ge, Tan, Yufeng, He, Bi, Zeng, Hengliang, Jiang, Chuan

“…The performance of imaging systems is inevitably degraded by aberrations of optical systems. Furthermore, images detected by long-distance imaging schemes also…”
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High-precision aberration retrieval with a scanning quadrant detector and gradient-based evolutionary particle swarm optimization algorithm by Liu, Zuoyu, Liu, Zhangchen, Li, Shuqiang, Li, Ruipeng, Chai, Haiyang, Liu, Yongkai, Lv, Furui, Li, Yatian, Wu, Jiabin, Gao, Shijie

“…During the application of the quadrant detector (QD) system, the performance degradation of the optomechanical structure due to long-term application leads to…”
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System design for coherent combined massive fiber laser array based on cascaded internal phase control by Long, Jinhu, Su, Rongtao, Hou, Tianyue, Chang, Qi, Jiang, Min, Chang, Hongxiang, Deng, Yu, Ma, Yanxing, Ma, Pengfei, Zhou, Pu

“… The principle of the technique was introduced in detail, and the numerical simulations were carried out based on the stochastic parallel gradient descent (SPGD) algorithm…”
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Photonic integrated coherent beam combiner based on MMI and the SPGD algorithm by Jiao, Suping, Qiu, Jifang, Zhao, Guojun, Wu, Jian

“…) and the stochastic parallel gradient descent (SPGD) algorithm, which avoids detecting the light out of each channel and adding the data signal in the electrical domain…”
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Nesterov-accelerated adaptive momentum estimation-based wavefront distortion correction algorithm by Zhao, Hui, An, Jing, Yu, Mengjie, Lv, Diankai, Kuang, Kaida, Zhang, Tianqi

“…In order to improve the wavefront distortion correction performance of the classical stochastic parallel gradient descent (SPGD…”
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Free-space quantum key distribution in urban daylight with the SPGD algorithm control of a deformable mirror by Gong, Yun-Hong, Yang, Kui-Xing, Yong, Hai-Lin, Guan, Jian-Yu, Shentu, Guo-Liang, Liu, Chang, Li, Feng-Zhi, Cao, Yuan, Yin, Juan, Liao, Sheng-Kai, Ren, Ji-Gang, Zhang, Qiang, Peng, Cheng-Zhi, Pan, Jian-Wei

“… Here, we develop the stochastic parallel gradient descent (SPGD) algorithm with a deformable mirror to improve the signal-to-noise ratio (SNR…”
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Automated fast computational adaptive optics for optical coherence tomography based on a stochastic parallel gradient descent algorithm by Zhu, Dan, Wang, Ruoyan, Žurauskas, Mantas, Pande, Paritosh, Bi, Jinci, Yuan, Qun, Wang, Lingjie, Gao, Zhishan, Boppart, Stephen A.

“… In this paper, an automated fast computational aberration correction method based on a stochastic parallel gradient descent (SPGD…”
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Multimode fiber modal decomposition based on hybrid genetic global optimization algorithm by Li, Lei, Leng, Jinyong, Zhou, Pu, Chen, Jinbao

“…) and stochastic parallel gradient descent (SPGD) algorithm, is firstly proposed to reduce local minima possibilities caused by sensitivity to initial values…”
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Coherent beam combining of two all-PM thulium-doped fiber chirped pulse amplifiers by Ren, Bo, Chang, Hongxiang, Li, Can, Wang, Tao, Jin, Kaikai, Zhang, Jiayi, Guo, Kun, Su, Rongtao, Leng, Jinyong, Zhou, Pu

“…) fiber chirped pulse amplifiers. Through phase-locking the two channels via a fiber stretcher by using the stochastic parallel gradient descent (SPGD…”
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Experimental demonstration of scene-based cophasing in optical synthetic aperture imaging using the SPGD algorithm by Hirose, Makoto, Miyamura, Norihide

“… This paper proposes a scene-based cophasing technique using the stochastic parallel gradient descent (SPGD…”
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Deep learning–based vortex decomposition and switching based on fiber vector eigenmodes by Hou, Mengdie, Xu, Mengjun, Xu, Jiangtao, Lu, Jiafeng, An, Yi, Huang, Liangjin, Zeng, Xianglong, Pang, Fufei, Li, Jun, Yi, Lilin

“… Assisted by the deep learning–based stochastic parallel gradient descent (SPGD) algorithm, the modal coefficients and optical field distributions can be retrieved in 1.32…”
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Adam SPGD algorithm in freeform surface in-process interferometry by Wu, Jinling, Hu, Chengwen, Liu, Renhu, Wu, Shengyang, Cao, Jiaquan, Cheng, Zhongtao, Yu, Benli, Zhang, Lei

“… The adaptive moment estimation (Adam) stochastic parallel gradient descent (SPGD) algorithm is employed in this paper for fringes release…”
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An adaptive enhancement method based on stochastic parallel gradient descent of glioma image by Wang, Hongfei, Peng, Xinhao, Ma, ShiQing, Wang, Shuai, Xu, Chuan, Yang, Ping

“… To enrich the field of glioma image enhancement, this research proposed a glioma image enhancement method based on histogram modification and total variational using stochastic parallel gradient descent (SPGD) algorithm…”
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Sidelobe suppression for accelerating beams by Zhang, Cilong, Zhao, Yanbo, Tan, Qiaofeng

“… The proposed method encompasses a two-step angular spectrum design, including employing a general model to establish the phase distribution and applying a stochastic parallel gradient descent (SPGD…”
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Efficient distributed architecture and optimized subarray control strategy to facilitate large-scale coherent beam combination by Qi, Jiaqin, Zheng, Wenhui, Jiang, Wenjun, Dou, Jiazhen, Zhong, Liyun, Di, Jianglei, Qin, Yuwen

“… Addressing this challenge, we propose a distributed CBC system architecture based on the optimized stochastic parallel gradient descent (SPGD) algorithm…”
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7.1 kW coherent beam combining system based on a seven-channel fiber amplifier array by Ma, Pengfei, Chang, Hongxiang, Ma, Yanxing, Su, Rongtao, Qi, Yunfeng, Wu, Jian, Li, Can, Long, Jinhu, Lai, Wenchang, Chang, Qi, Hou, Tianyue, Zhou, Pu, Zhou, Jun

“… Coherently combining of seven-channel narrow-linewidth, linear-polarized, kW-level power all-fiber amplifiers has been successfully demonstrated by using the stochastic parallel gradient descent (SPGD) algorithm…”
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