The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Yasutake Ohishi - One of the best experts on this subject based on the ideXlab platform.
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mid infrared supercontinuum generation in a novel asse 2 as 2 s 5 hybrid microstructured optical fiber
Optics Express, 2014Co-Authors: Tonglei Cheng, Yasuhire Kanou, Dinghuan Deng, Morio Matsumoto, Takashi Misumi, Takenobu Suzuki, Yasutake OhishiAbstract:A novel AsSe2-As2S5 hybrid MOF (HMOF) is designed and fabricated by the rod-in-tube drawing technique. The core is made from AsSe2 glass and the cladding is made from As2S5 glass. The loss is ~1.2 dB/m at ~3000 nm. Zero Dispersion Wavelength (ZDW) of the HMOF is ~3380 nm. Supercontinuum (SC) generation in a 2 cm-long HMOF is investigated with the pump Wavelengths of ~3062, 3241 and 3389 nm from a tunable optical parametric oscillator (OPO) system. Broadband mid-infrared (MIR) SC generation with the spectrum from ~1256 to 5400 nm is obtained with the peak power of ~1337 kW at the Wavelength of ~3389 nm.
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soliton self frequency shift and dispersive wave in a hybrid four hole asse2 as2s5 microstructured optical fiber
Applied Physics Letters, 2014Co-Authors: Tonglei Cheng, Yasuhire Kanou, Dinghuan Deng, Morio Matsumoto, Takashi Misumi, Takenobu Suzuki, Meisong Liao, Koji Asano, Yasutake OhishiAbstract:A hybrid four-hole AsSe2-As2S5 microstructured optical fiber (MOF) is fabricated by the rod-in-tube drawing technique. The core is made of AsSe2 glass and the cladding is made of As2S5 glass. The material refractive indices of the core and the cladding are ∼2.832 and ∼2.219 at the Wavelength of ∼2.8 μm, respectively. The calculated zero-Dispersion Wavelength of the AsSe2-As2S5 MOF is 2.759 μm. Soliton self-frequency shift with a soliton central Wavelength from 2.986 to 3.419 μm is observed when the AsSe2-As2S5 MOF is pumped by an optical parametric oscillator at the pump Wavelength of ∼2.8 μm. At the same time a blue-shift dispersive wave is emitted by the soliton.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Conference on Lasers and Electro-Optics, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We demonstrate wide and flattened supercontinuum generation in zero-Dispersion Wavelength decreasing tellurite microstructured fibers fabricated by using the tapering method.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Optics Letters, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We report wide and flattened supercontinuum generation in zero-Dispersion-Wavelength-decreasing tellurite microstructured fibers fabricated by using the tapering method. Flattened supercontinuum light expanding from 600to2800 nm can be generated when launching a 1550 nm femtosecond fiber laser into a 5-cm-long, zero-Dispersion-decreasing, tellurite microstructured fiber. Our results show that short length (several centimeter) zero-Dispersion-Wavelength decreasing highly nonlinear fiber has a potential for generating wide and flattened supercontinuum light sources.
Takenobu Suzuki - One of the best experts on this subject based on the ideXlab platform.
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mid infrared supercontinuum generation in a novel asse 2 as 2 s 5 hybrid microstructured optical fiber
Optics Express, 2014Co-Authors: Tonglei Cheng, Yasuhire Kanou, Dinghuan Deng, Morio Matsumoto, Takashi Misumi, Takenobu Suzuki, Yasutake OhishiAbstract:A novel AsSe2-As2S5 hybrid MOF (HMOF) is designed and fabricated by the rod-in-tube drawing technique. The core is made from AsSe2 glass and the cladding is made from As2S5 glass. The loss is ~1.2 dB/m at ~3000 nm. Zero Dispersion Wavelength (ZDW) of the HMOF is ~3380 nm. Supercontinuum (SC) generation in a 2 cm-long HMOF is investigated with the pump Wavelengths of ~3062, 3241 and 3389 nm from a tunable optical parametric oscillator (OPO) system. Broadband mid-infrared (MIR) SC generation with the spectrum from ~1256 to 5400 nm is obtained with the peak power of ~1337 kW at the Wavelength of ~3389 nm.
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soliton self frequency shift and dispersive wave in a hybrid four hole asse2 as2s5 microstructured optical fiber
Applied Physics Letters, 2014Co-Authors: Tonglei Cheng, Yasuhire Kanou, Dinghuan Deng, Morio Matsumoto, Takashi Misumi, Takenobu Suzuki, Meisong Liao, Koji Asano, Yasutake OhishiAbstract:A hybrid four-hole AsSe2-As2S5 microstructured optical fiber (MOF) is fabricated by the rod-in-tube drawing technique. The core is made of AsSe2 glass and the cladding is made of As2S5 glass. The material refractive indices of the core and the cladding are ∼2.832 and ∼2.219 at the Wavelength of ∼2.8 μm, respectively. The calculated zero-Dispersion Wavelength of the AsSe2-As2S5 MOF is 2.759 μm. Soliton self-frequency shift with a soliton central Wavelength from 2.986 to 3.419 μm is observed when the AsSe2-As2S5 MOF is pumped by an optical parametric oscillator at the pump Wavelength of ∼2.8 μm. At the same time a blue-shift dispersive wave is emitted by the soliton.
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soliton self frequency shift and third harmonic generation in a four hole as_2s_5 microstructured optical fiber
Optics Express, 2014Co-Authors: Tonglei Cheng, Dinghuan Deng, Ryo Usaki, Zhongchao Duan, Weiqing Gao, Meisong Liao, Yasuhire Kanou, Morio Matsumoto, Takashi Misumi, Takenobu SuzukiAbstract:Soliton self-frequency shift (SSFS) and third-harmonic generation (THG) are observed in a four-hole As2S5 chalcogenide microstructured optical fiber (MOF). The As2S5 MOF is tapered to offer an ideal environment for SSFS. After tapering, the zero-Dispersion Wavelength (ZDW) shifts from 2.02 to 1.61 μm, and the rate of SSFS can be enhanced by increasing the energy density of the pulse. By varying the average input power from 220 to 340 mW, SSFS of a soliton central Wavelength from 2.206 to 2.600 μm in the mid-infrared is observed in the tapered segment, and THG at 632 nm is observed in the untapered segment.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Conference on Lasers and Electro-Optics, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We demonstrate wide and flattened supercontinuum generation in zero-Dispersion Wavelength decreasing tellurite microstructured fibers fabricated by using the tapering method.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Optics Letters, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We report wide and flattened supercontinuum generation in zero-Dispersion-Wavelength-decreasing tellurite microstructured fibers fabricated by using the tapering method. Flattened supercontinuum light expanding from 600to2800 nm can be generated when launching a 1550 nm femtosecond fiber laser into a 5-cm-long, zero-Dispersion-decreasing, tellurite microstructured fiber. Our results show that short length (several centimeter) zero-Dispersion-Wavelength decreasing highly nonlinear fiber has a potential for generating wide and flattened supercontinuum light sources.
K. Inoue - One of the best experts on this subject based on the ideXlab platform.
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fiber four wave mixing in multi amplifier systems with nonuniform chromatic Dispersion
Journal of Lightwave Technology, 1995Co-Authors: K. Inoue, Hapnes TobaAbstract:Fiber fiber-wave mixing (FWM) is studied for multichannel multi-amplifier systems composed of short fibers with different zero-Dispersion Wavelength. An analytical expression describing FWM in these systems is derived. Using the expression, crosstalk is calculated for various combinations of fiber lengths, which are selected according to a random function, and allowable fiber input power is evaluated. The results show that the allowable input power for nonuniform Dispersion is larger than that for uniform Dispersion by several dB, depending on system conditions. >
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Crosstalk and power penalty due to fiber four-wave mixing in multichannel transmissions
Journal of Lightwave Technology, 1994Co-Authors: K. Inoue, K. Nakanishi, Hapnes TobaAbstract:The influence of fiber four-wave mixing on multichannel transmissions is investigated. We present strict and approximate theoretical treatments for evaluating power penalty with intensity-modulated/direct-detection (IM/DD) and FSK/direct detection. A comparison of calculations shows that both methods yield the same result in the small penalty region. Using these treatments, power penalty and allowable fiber input power are derived for various system conditions. It is shown that the power penalty is not uniquely determined by the crosstalk level for CW lights, depending on the demodulation scheme and channel spacing, especially in the zero-Dispersion Wavelength region.
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Suppression technique for fiber four-wave mixing using optical multi-/demultiplexers and a delay line
Journal of Lightwave Technology, 1993Co-Authors: K. InoueAbstract:A technique is proposed for suppressing four-wave mixing (FWM) in optical fiber lines that have multistage optical amplifiers. The phase relationship of the FWM light components is randomized by combinations of optical multi-/demultiplexers and a delay line, so that the total FWM light power is reduced. A preliminary experiment confirming the suppression mechanism is carried out, and the effect of the new suppression technique in multichannel systems is evaluated. The calculations show that the technique reduces the FWM crosstalk in the zero-Dispersion Wavelength region.
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four wave mixing in an optical fiber in the zero Dispersion Wavelength region
Journal of Lightwave Technology, 1992Co-Authors: K. InoueAbstract:Fiber four-wave mixing (FWM) in the zero-Dispersion Wavelength region is described. The phase-matching characteristics are studied in the Wavelength region where the first-order chromatic Dispersion is zero. The results show that the phase-matching condition is satisfied and FWM light is efficiently generated at particular combinations of input light Wavelengths. It is also shown that the deviation of the zero-Dispersion Wavelength along the fiber length plays an important role in FWM behavior. >
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Wavelength conversion experiment using fiber four wave mixing
IEEE Photonics Technology Letters, 1992Co-Authors: K. Inoue, H TobaAbstract:Wavelength conversion using fiber four-wave mixing in an optical fiber is demonstrated. Utilizing the Wavelength region around the zero-Dispersion Wavelength of a fiber, 622 Mbt/s FSK signal light is converted from 1555.2 to 1547.6 nm with a conversion efficiency of -24 dB. >
Meisong Liao - One of the best experts on this subject based on the ideXlab platform.
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soliton self frequency shift and dispersive wave in a hybrid four hole asse2 as2s5 microstructured optical fiber
Applied Physics Letters, 2014Co-Authors: Tonglei Cheng, Yasuhire Kanou, Dinghuan Deng, Morio Matsumoto, Takashi Misumi, Takenobu Suzuki, Meisong Liao, Koji Asano, Yasutake OhishiAbstract:A hybrid four-hole AsSe2-As2S5 microstructured optical fiber (MOF) is fabricated by the rod-in-tube drawing technique. The core is made of AsSe2 glass and the cladding is made of As2S5 glass. The material refractive indices of the core and the cladding are ∼2.832 and ∼2.219 at the Wavelength of ∼2.8 μm, respectively. The calculated zero-Dispersion Wavelength of the AsSe2-As2S5 MOF is 2.759 μm. Soliton self-frequency shift with a soliton central Wavelength from 2.986 to 3.419 μm is observed when the AsSe2-As2S5 MOF is pumped by an optical parametric oscillator at the pump Wavelength of ∼2.8 μm. At the same time a blue-shift dispersive wave is emitted by the soliton.
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soliton self frequency shift and third harmonic generation in a four hole as_2s_5 microstructured optical fiber
Optics Express, 2014Co-Authors: Tonglei Cheng, Dinghuan Deng, Ryo Usaki, Zhongchao Duan, Weiqing Gao, Meisong Liao, Yasuhire Kanou, Morio Matsumoto, Takashi Misumi, Takenobu SuzukiAbstract:Soliton self-frequency shift (SSFS) and third-harmonic generation (THG) are observed in a four-hole As2S5 chalcogenide microstructured optical fiber (MOF). The As2S5 MOF is tapered to offer an ideal environment for SSFS. After tapering, the zero-Dispersion Wavelength (ZDW) shifts from 2.02 to 1.61 μm, and the rate of SSFS can be enhanced by increasing the energy density of the pulse. By varying the average input power from 220 to 340 mW, SSFS of a soliton central Wavelength from 2.206 to 2.600 μm in the mid-infrared is observed in the tapered segment, and THG at 632 nm is observed in the untapered segment.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Conference on Lasers and Electro-Optics, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We demonstrate wide and flattened supercontinuum generation in zero-Dispersion Wavelength decreasing tellurite microstructured fibers fabricated by using the tapering method.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Optics Letters, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We report wide and flattened supercontinuum generation in zero-Dispersion-Wavelength-decreasing tellurite microstructured fibers fabricated by using the tapering method. Flattened supercontinuum light expanding from 600to2800 nm can be generated when launching a 1550 nm femtosecond fiber laser into a 5-cm-long, zero-Dispersion-decreasing, tellurite microstructured fiber. Our results show that short length (several centimeter) zero-Dispersion-Wavelength decreasing highly nonlinear fiber has a potential for generating wide and flattened supercontinuum light sources.
Guanshi Qin - One of the best experts on this subject based on the ideXlab platform.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Conference on Lasers and Electro-Optics, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We demonstrate wide and flattened supercontinuum generation in zero-Dispersion Wavelength decreasing tellurite microstructured fibers fabricated by using the tapering method.
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zero Dispersion Wavelength decreasing tellurite microstructured fiber for wide and flattened supercontinuum generation
Optics Letters, 2010Co-Authors: Guanshi Qin, Takenobu Suzuki, Meisong Liao, Xin Yan, Chihiro Kito, Atsushi Mori, Yasutake OhishiAbstract:We report wide and flattened supercontinuum generation in zero-Dispersion-Wavelength-decreasing tellurite microstructured fibers fabricated by using the tapering method. Flattened supercontinuum light expanding from 600to2800 nm can be generated when launching a 1550 nm femtosecond fiber laser into a 5-cm-long, zero-Dispersion-decreasing, tellurite microstructured fiber. Our results show that short length (several centimeter) zero-Dispersion-Wavelength decreasing highly nonlinear fiber has a potential for generating wide and flattened supercontinuum light sources.