The Experts below are selected from a list of 17295 Experts worldwide ranked by ideXlab platform
Kunimasa Saitoh - One of the best experts on this subject based on the ideXlab platform.
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Theoretical Investigation of Six-Mode Multi/Demultiplexer Based on Fused-Type Multicore Fiber Coupler
IEEE Photonics Journal, 2016Co-Authors: Shoko Nishimoto, Takeshi Fujisawa, Yusuke Sasaki, Hitoshi Uemura, Kunimasa SaitohAbstract:A six-mode $(\text{LP}_{01}/\text{LP}_{11{ab}}/\text{LP}_{21{ab}}/\text{LP}_{02})$ multi/demultiplexer based on a fused-type multicore Fiber Coupler is proposed, and the coupling characteristics are investigated. The multi/demultiplex operation is achieved by a phase matching between the desired mode of center core and the $\text{LP}_{01}$ mode of the outer core in the elongated region of the fused-type multicore Fiber Coupler. From the numerical results based on the beam propagation method, it is found that the coupling efficiencies between the $\text{LP}_{01}$ and $\text{LP}_{11}/\text{LP}_{21}/\text{LP}_{02}$ modes are more than −0.1 dB, and the crosstalk is lower than −20 dB at the wavelength of 1550 nm.
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Theoretical Investigation of Six-Mode Multi/Demultiplexer Based on Fused-Type Multicore Fiber Coupler
IEEE Photonics Journal, 2016Co-Authors: Shoko Nishimoto, Takeshi Fujisawa, Yusuke Sasaki, Hitoshi Uemura, Kunimasa SaitohAbstract:A six-mode (LP01/LP11ab/LP21ab/LP02) multi/demultiplexer based on a fusedtype multicore Fiber Coupler is proposed, and the coupling characteristics are investigated. The multi/demultiplex operation is achieved by a phase matching between the desired mode of center core and the LP01 mode of the outer core in the elongated region of the fused-type multicore Fiber Coupler. From the numerical results based on the beam propagation method, it is found that the coupling efficiencies between the LP01 and LP11/LP21/LP02 modes are more than -0.1 dB, and the crosstalk is lower than -20 dB at the wavelength of 1550 nm
Yandong Gong - One of the best experts on this subject based on the ideXlab platform.
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Fabrication of all-solid photonic bandgap Fiber Coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap Fiber Coupler based on the side-polishing technique. This device is believed to be the first demonstration of a photonic bandgap Fiber Coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable coupling ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the Coupler has excellent tunability properties, for which the coupling ratio can be smoothly and continuously controlled.
Xianglong Zeng - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive refractive index sensors based on tapered Fiber Coupler with sagnac loop
IEEE Photonics Technology Letters, 2016Co-Authors: Longfeng Luo, Jiali Tang, Lianmin Mao, Xianglong ZengAbstract:A kind of compact and highly sensitive refractive-index sensor based on reflective tapered Fiber Coupler is proposed. The sensing structure is fabricated by fusing and tapering a twisted optical Fiber. The achieved maximum sensitivity is 3617 nm/RIU for measuring refractive index ranging from 1.33 to 1.41. Comparing with other similar reflective devices, the transmission loss is relatively low ( $\sim 2$ dB), which is assigned to the employed Sagnac loop mirror to enhance the reflection of the system. Besides the intrinsic advantages of the reflective configuration, the proposed sensing structure has the additional advantages of compactness, low-cost, and ultrahigh sensitivity. It is also promising and cost effective for other all-Fiber device applications.
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temperature sensor using an optical Fiber Coupler with a thin film
Applied Optics, 2008Co-Authors: Hairu Guo, Xianglong Zeng, Fufei Pang, Na Che, Zhenyi Che, Tingyu WangAbstract:A temperature sensor was demonstrated and fabricated by coating thermosensitive film around a Fiber Coupler. Based on the multicladding equivalent method, the coated Fiber Coupler was simplified to a conventional one. With the high thermo-optical coefficient of organic-inorganic solgel material, a good sensing result was achieved. The range of temperature measured is from −50°C to 100°C. The resonant wavelength has a shift of about 25 nm. A sensitivity of 0.17 nm/°C is achieved. With the advantages of having a simple structure and being unaffected by the instability of the light source, the proposed Fiber Coupler temperature sensor will find wide applications.
Ping Shum - One of the best experts on this subject based on the ideXlab platform.
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Experimental investigation of tunable all-solid photonic bandgap Fiber Coupler
Proceedings of SPIE, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia YuAbstract:The fabrication of a tunable all-solid photonic bandgap Fiber Coupler based on side-polishing technique is reported. The all-solid photonic bandgap Fiber is set into a silica block and then polished to access the evanescent field. The photonic bandgap Fiber Coupler was assembled by mating two identical half-blocks with each other. By longitudinally adjusting the relative position between the mated pair, the tunable coupling ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the Coupler has excellent tunability properties, for which the coupling ratio can be smoothly and continuously tuned.
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Fabrication of all-solid photonic bandgap Fiber Coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap Fiber Coupler based on the side-polishing technique. This device is believed to be the first demonstration of a photonic bandgap Fiber Coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable coupling ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the Coupler has excellent tunability properties, for which the coupling ratio can be smoothly and continuously controlled.
Shoko Nishimoto - One of the best experts on this subject based on the ideXlab platform.
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Theoretical Investigation of Six-Mode Multi/Demultiplexer Based on Fused-Type Multicore Fiber Coupler
IEEE Photonics Journal, 2016Co-Authors: Shoko Nishimoto, Takeshi Fujisawa, Yusuke Sasaki, Hitoshi Uemura, Kunimasa SaitohAbstract:A six-mode $(\text{LP}_{01}/\text{LP}_{11{ab}}/\text{LP}_{21{ab}}/\text{LP}_{02})$ multi/demultiplexer based on a fused-type multicore Fiber Coupler is proposed, and the coupling characteristics are investigated. The multi/demultiplex operation is achieved by a phase matching between the desired mode of center core and the $\text{LP}_{01}$ mode of the outer core in the elongated region of the fused-type multicore Fiber Coupler. From the numerical results based on the beam propagation method, it is found that the coupling efficiencies between the $\text{LP}_{01}$ and $\text{LP}_{11}/\text{LP}_{21}/\text{LP}_{02}$ modes are more than −0.1 dB, and the crosstalk is lower than −20 dB at the wavelength of 1550 nm.
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Theoretical Investigation of Six-Mode Multi/Demultiplexer Based on Fused-Type Multicore Fiber Coupler
IEEE Photonics Journal, 2016Co-Authors: Shoko Nishimoto, Takeshi Fujisawa, Yusuke Sasaki, Hitoshi Uemura, Kunimasa SaitohAbstract:A six-mode (LP01/LP11ab/LP21ab/LP02) multi/demultiplexer based on a fusedtype multicore Fiber Coupler is proposed, and the coupling characteristics are investigated. The multi/demultiplex operation is achieved by a phase matching between the desired mode of center core and the LP01 mode of the outer core in the elongated region of the fused-type multicore Fiber Coupler. From the numerical results based on the beam propagation method, it is found that the coupling efficiencies between the LP01 and LP11/LP21/LP02 modes are more than -0.1 dB, and the crosstalk is lower than -20 dB at the wavelength of 1550 nm