Design of Ultra-Small Polarization Splitter Based on a Resonant Coupling between Silicon Wire and Slot Waveguides

Author(s):  
Masa-aki Komatsu ◽  
Kunimasa Saitoh ◽  
Kuniaki Kakihara ◽  
Masanori Koshiba
Author(s):  
Jin Xu ◽  
Yuting Zhao

Background: Detuning is the main problem that affects the efficiency and transmission distance of the resonant coupling Wireless Power Transmission (WPT). The distance of load and the offset of the load position could cause serious detuning. Methods: This paper presents an adjustable coil in which inductance can be adjusted. Then a model of WPT was established that could compensate resonant frequency automatically using the adjustable coil. Next, the relationship between the primary resonant frequency and the transmission efficiency is analyzed from the circuit. The analysis proved that the design of the adjustable coil could improve the transmission efficiency of the WPT system. Finally, a prototype of WPT system was built. Results: The experimental results showed that WPT system with adjustable coil can improve the transmission efficiency which proves the theoretical research. At the same time, it has essential reference value for the future research of WPT. Conclusion: In this paper, aiming at the system detuning caused by some other factors, such as the position shift of the load during the wireless power transmission, an adjustable coil is proposed.


2021 ◽  
Vol 9 ◽  
Author(s):  
Xin Zhang ◽  
Shoufei Gao ◽  
Yingying Wang ◽  
Wei Ding ◽  
Pu Wang

Abstract High-power fiber lasers have experienced a dramatic development over the last decade. Further increasing the output power needs an upscaling of the fiber mode area, while maintaining a single-mode output. Here, we propose an all-solid anti-resonant fiber (ARF) structure, which ensures single-mode operation in broadband by resonantly coupling higher-order modes into the cladding. A series of fibers with core sizes ranging from 40 to 100 μm are proposed exhibiting maximum mode area exceeding 5000 μm2. Numerical simulations show this resonant coupling scheme provides a higher-order mode (mainly TE01, TM01, and HE21) suppression ratio of more than 20 dB, while keeping the fundamental mode loss lower than 1 dB/m. The proposed structure also exhibits high tolerance for core index depression.


2021 ◽  
pp. 127107
Author(s):  
Zhanqiang Hui ◽  
Tianshu Zhang ◽  
Meizhi Zhang ◽  
Deng Pan ◽  
Dongdong Han ◽  
...  

Author(s):  
Jose Manuel Luque-Gonzalez ◽  
Alaine Herrero-Bermello ◽  
Alejandro Ortega-Monux ◽  
Marina Sanchez-Rodriguez ◽  
Aitor V. Velasco ◽  
...  

2021 ◽  
Vol 1873 (1) ◽  
pp. 012017
Author(s):  
Xiaojuan She ◽  
Han Liao ◽  
Yingxuan Zhao ◽  
Junbo Zhu ◽  
Yang Li ◽  
...  

2014 ◽  
Vol 26 (9) ◽  
pp. 925-928 ◽  
Author(s):  
Hang Guan ◽  
Ari Novack ◽  
Matthew Streshinsky ◽  
Ruizhi Shi ◽  
Yang Liu ◽  
...  

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