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Temperature-compensated dual-polarization fiber grating laser sensors
We report on temperature compensation for beat-frequency-encoded dual-polarization fiber laser sensors based on a cleave-rotate-splice method. By cleaving the laser cavity into two segments with comparable lengths, aligning them with a rotated angle of 90°, and then fusion splicing the two halves, the temperature sensitivity in terms of beat-frequency variation can be greatly reduced from -1.99 to -0.30 MHz/°C (or by 84.9%). In contrast, the sensitivity to point loaded mass hardly changes. We al
Conditional Ciphertext-Policy Attribute-Based Encryption Scheme in Vehicular Cloud Computing
Conditional Ciphertext-Policy Attribute-Based Encryption Scheme in Vehicular Cloud Computing
Fabrication of kW-level chirped and tilted fiber Bragg gratings and filtering of stimulated Raman scattering in high-power CW oscillators
Suppression of stimulated Raman scattering (SRS) by means of chirped and tilted fiber Bragg gratings (CTFBGs) has become a key topic. However, research on high-power systems is still lacking due to two problems. Firstly, after the inscription, there are a large number of hydroxyl compounds and hydrogen molecules in CTFBGs that cause significant heating due to their strong infrared absorption. Secondly, CTFBGs can couple Stokes light from the core to the cladding and the coating, which causes ser
分析高光谱散射特征以预测苹果的青紫化敏感性
分析高光谱散射特征以预测苹果的青紫化敏感性
