[Huaizhou Jin, Kaiyuan Liu, Shangzhong Jin, Liang Chen, Kun Yuan, Songyuan Cen] CN Hangzhou A road lamp control method is disclosed, comprising steps of determining whether a road lamp lighting condition is satisfied, and controlling the road lamp lighting time period. The method can control ON and OFF and the brightness of the road lamps in real time based on the real traffic flow at night, and thereby ensuring safety of pedestrians and vehicles and saving electrical energy.

[ZHANG, Zaixuan, WANG, Jianfeng, JIN, Yongxing, YU, Xiangdong, GONG, Huaping, LI, Yi, JIN, Shangzhong] No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018;No.258, Xueyuan Street Xiasha Higher Education Zone Jianggan District Hangzhou, Zhejiang 310018 A Brillouin optical time domain analyzer of a chaotic laser-related integrated optical fiber Raman amplifier, manufactured by using a chaotic laser-related principle, an optical fiber-stimulated Raman scattered light amplification effect, a strain of coherently amplified Brillouin scattered light, a temperature effect, and an optical time domain reflection principle. In the Brillouin optical time domain analyzer of the chaotic laser-related integrated optical fiber Raman amplifier, spatial resolution of a sensing system is improved by correlation processing a backward probing light of a sensing optical fiber and a local reference light. The difficulty of the optical fiber Brillouin optical time domain analyzer requiring a rigorous locking on a probe laser and a pump laser frequency is solved by employing a continuous-operation high power optical fiber Raman laser as a pump light source for the Brillouin optical time domain analyzer. By using a broadband optical fiber Raman amplifier to replace a narrowband optical fiber Brillouin amplifier, the gain of stimulated Brillouin scattered light backward correlation amplified is increased, the signal-to-noise ratio of the sensing system is improved, and correspondingly the measurement length and the measurement precision of the sensing system are improved.

[Huaizhou JIN, Shangzhong JIN, Yifan Li, Xueli Lin, Xuecheng Zhang, Hangbin Tan, Fei Zhang] CN Hangzhou City Smart glasses with an eye protection function comprise an adjustable focus liquid lens assembly and a drive mechanism. The lens assembly comprises a first lens, a second lens, and a transparent liquid-filled flexible film sandwiched between the first lens and the second lens. The focal length of the lens assembly is determined by the first lens, the second lens, and the flexible film together. The focal length of the flexible film changes as a thickness of the flexible film changes. The drive mechanism is configured to drive the flexible film to deform and thus enable the thickness of the flexible film to be changed such that the focal length of the lens assembly is switched between the first focal length and the second focal length. The glasses enable a user wearing it to blink his or her eyes unconsciously, thereby overcoming the drawback of prior art, and enhancing user experience.

[Huaizhou Jin, Kaiyuan Liu, Shangzhong Jin, Liang Chen, Kun Yuan, Songyuan Cen] CN Hangzhou, Zhejiang A road lamp control method is disclosed, comprising steps of determining whether a road lamp lighting condition is satisfied, and controlling the road lamp lighting time period. The method can control ON and OFF and the brightness of the road lamps in real time based on the real traffic flow at night, and thereby ensuring safety of pedestrians and vehicles and saving electrical energy.

[Huaizhou Jin, Kaiyuan Liu, Shangzhong Jin, Lingling Chen, Wenhuai Li, Kun Yuan] CN Hangzhou Zhejiang A Raman spectrometer includes a laser, a lens, a dichroscope, a confocal microscope, an optical system, a Fabri-Perot tunable filter and a silicon detector. The light emitted by the laser impinges on the dichroscope after passing through the lens. The dichroscope reflects the light, and the reflected light impinges on a sample through the confocal microscope. The light generates a Rayleigh scattering and a Raman scattering upon reaching the sample, scattered light generating the Rayleigh scattering and the scattered light generating the Raman scattering impinge on the dichroscope again after passing through the confocal microscope. The Raman scattered light transmitted by the dichroscope passes through the optical system and the Fabri-Perot tunable filter successively, and the light passing through the Fabri-Perot tunable filter is detected by the silicon detector to obtain a light signal. The Raman spectrometer has the advantages of small volume and low cost.

[ZHANG, Zaixuan, LI, Chenxia, JIN, Shangzhong, WANG, Jianfeng, GONG, Huaping, LI, Yi] Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018;Road Xiashagaojiaoyuanqu Xueyuan, Jianggan District Hangzhou, Zhejiang 310018 A distributed optical fiber sensor based on Roman and Brillouin scattering comprises a F-P cavity semiconductor wide-band pulse fiber laser (11), an outer cavity semiconductor narrow-band fiber laser (12), a wave-separator (13), an electro-optical modulator (14), an isolator (15), an Erbium-doped fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first optical-electro receiving and amplifying module (20), a second optical-electro receiving and amplifying module (21), a direct detection system (22), a transmission narrow-band fiber grating (23), a circulator (24), and a coherent detection system (25). Simultaneous measurement of temperature and strain is realized, and signal-noise ratio is enhanced.

[ZHANG, Zaixuan, KANG, Juan, ZHANG, Wenping, LI, Chenxia, YU, Xiangdong, WANG, Jianfeng, ZHANG, Wensheng, JIN, Shangzhong] No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018;No. 258, Xueyuan Street, Xiasha Higher Education Zone, Jianggan District Hangzhou, Zhejiang 310018 A fused optical fiber Raman frequency shifter and a fully distributed optical fiber sensor for a Raman amplifier. A laser light emitted by an optical fiber pulsed laser device (11) is frequency-shifted by 13.2 THz via the optical fiber Raman frequency shifter to generate a 1660 nm wave band broad spectrum Raman laser light that serves as a broad spectrum light source for the fully distributed fiber optical sensor and is emitted into a sensor optical fiber (17). Deformation and breakage of an optical fiber are detected by utilizing the principle that the reverse Rayleigh scattered light intensity of the sensor optical fiber (17) is modulated by optical fiber strain. An anti-Stokes Raman scattered light of 1550 nm wave frequency generated in the sensor optical fiber (17) is amplified via the optical fiber Raman amplifier. By deducting the effect of strain from the intensity ratio between the anti-Stokes Raman scattered light and the Rayleigh scattered light, temperature information of each optical fiber section is acquired, thus allowing detections of strain and temperature to be free of cross effects. The fully distributed optical fiber sensor utilizes optical time-domain reflectometry to position a detection point on the sensor optical fiber, is applicable in monitoring petrochemical pipelines, tunnels, large-scale civil engineering projects that are of an ultra-long range of within 100 kilometers and in disaster prediction monitoring.

[WEI JIANYU, JIN YABO, SHI BAOFENG, ZHANG DEPING, SHOU ANFA, ZHANG JILI, QIN SHANGZHONG, SUN JIANSHENG, HUANG CHONGJUN, JIA HAIJIANG, YANG QIGANG, LIANG YONGJIN, HE YUANLAN, OU QINGHUA, HE MINGXIONG, LI ZHI] CN;CN

[Zaixuan Zhang, Chenxia Li, ShangZhong Jin, Jianfeng Wang, Huaping Gong, Yi Li] CN Zhejiang A distributed optical fiber sensor based on Raman and Brillouin scattering is provided. The distributed optical fiber sensor includes a semiconductor FP cavity pulsed wideband optical fiber laser (11), a semiconductor external-cavity continuous narrowband optical fiber laser (12), a wave separator (13), an electro-optic modulator (14), an isolator (15), an Er-doped optical fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first photoelectric receiving and amplifying module (20), a second photoelectric receiving and amplifying module (21), a direct detection system (22), a narrowband optical fiber transmission grating (23), a circulator (24) and a coherence detection module (25). The temperature and the strain can be measured simultaneously, and the signal-to-noise ratio of the system is enhanced.

[Zaixuan Zhang, Chenxia Li, Shangzhong Jin, Jianfeng Wang, Huaping Gong, Yi Li] CN Zhejiang A distributed optical fiber sensor based on Raman and Brillouin scattering is provided. The distributed optical fiber sensor includes a semiconductor FP cavity pulsed wideband optical fiber laser (11), a semiconductor external-cavity continuous narrowband optical fiber laser (12), a wave separator (13), an electro-optic modulator (14), an isolator (15), an Er-doped optical fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first photoelectric receiving and amplifying module (20), a second photoelectric receiving and amplifying module (21), a direct detection system (22), a narrowband optical fiber transmission grating (23), a circulator (24) and a coherence detection module (25). The temperature and the strain can be measured simultaneously, and the signal-to-noise ratio of the system is enhanced.