Search Results - "Namihira, Y"

Proposal for Highly Nonlinear Dispersion-Flattened Octagonal Photonic Crystal Fibers by Abdur Razzak, S.M., Namihira, Y.

“…A highly nonlinear photonic crystal fiber (HNL-PCF) based on an octagonal structure with isosceles triangular-latticed cladding is proposed for the…”
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Tailoring Dispersion and Confinement Losses of Photonic Crystal Fibers Using Hybrid Cladding by Razzak, S.M.A., Namihira, Y.

“…We present a hybrid cladding photonic crystal fiber (PCF) for shaping nearly zero ultraflattened dispersion and low confinement losses in a wide range of…”
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Design of all normal dispersion highly nonlinear photonic crystal fibers for supercontinuum light sources: Applications to optical coherence tomography systems by Hossain, M.A., Namihira, Y., Razzak, S.M.A., Islam, M.A., Liu, J., Kaijage, S.F., Hirako, Y.

“…In this paper, we investigate the generation of supercontinuum (SC) light source based on a highly nonlinear Germanium (Ge) doped photonic crystal fiber…”
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Polarization maintaining large nonlinear coefficient photonic crystal fibers using rotational hybrid cladding by Habib, M. Samiul, Habib, M. Selim, Hasan, M.I., Razzak, S.M.A., Hossain, M.A., Namihira, Y.

“…In this paper, we present and explore a new hybrid cladding design for improved birefringence and highly nonlinear photonic crystal fibers (PCFs) in a broad…”
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Microstructure holey fibers as wideband dispersion compensating media for high speed transmission system by Selim Habib, M., Samiul Habib, M., Hasan, M.I., Razzak, S.M.A., Mahmud, R.R., Namihira, Y.

“…This paper presents a dispersion compensating microstructure holey fiber for wideband transmission system. The finite element method with perfectly matched…”
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Design of highly birefringent holey fibers with near-zero ultra-flattened chromatic dispersion and ultralow confinement loss by Habib, M. Samiul, Habib, M. Selim, Razzak, S. M. A., Khan, M. A. Goffar, Namihira, Y., Hossain, M. A.

“…We present a holey fiber (HF) with elliptical air-holes located in the center core area that ensures high birefringence, near-zero ultra-flattened chromatic…”
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Dispersion-flattened supercontinuum light source design at center wavelength for high resolution optical coherence tomography in ophthalmology by Hossain, M.A., Namihira, Y.

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Opto-elastic constant in single mode optical fibers by Namihira, Y.

“…The dependence of the photo-elastic (or opto-elastic) constant upon the relative refractive index difference, the normalized frequency, and the wavelength for…”
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Dispersion-flattened supercontinuum light source design at 1.0μm center wavelength for high resolution optical coherence tomography in ophthalmology by Hossain, M.A., Namihira, Y.

“…Optimal wavelength light sources are designed for medical imaging to overcome the effects of the dispersion of the sampling medium of biological tissues which…”
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Multi-center observational study of personality and impulse control disorders in Japanese patients with Parkinson’s disease by Shinoda, T., Nakashita, S., Hamada, M., Nakashima, K., Hirono, K., Ito, M., Kashihara, K., Miyagi, T., Namihira, Y., Tokashiki, T., Maeda, T.

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Multi-center observational study of personality and impulse control disorders in Japanese patients with Parkinson’s disease by Shinoda, T., Nakashita, S., Hamada, M., Hirono, K., Ito, M., Kashihara, K., Miyagi, T., Namihira, Y., Tokashiki, T., Nakashima, K., Maeda, T.

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Chromatic dispersion measurement in 1.55 mu m narrow-band region using a tunable external-cavity laser by Horiuchi, Y., Namihira, Y., Wakabayashi, H.

“…Measurement of the chromatic dispersion of an 80.6-km-long, concatenated, dispersion-shifted, single-mode fiber (DSF) with a tunable 1.55- mu m external-cavity…”
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Polarization maintaining highly nonlinear photonic crystal fiber for supercontinuum generation at 1.55μm by Hossain, M.A., Namihira, Y., Islam, M.A., Hirako, Y.

“…A polarization maintaining highly nonlinear Germanium (Ge) doped photonic crystal fiber (HNL-GePCF) is proposed for supercontinuum (SC) generation at 1.55μm as…”
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Real-time measurements of polarization fluctuations in an optical fiber submarine cable in a deep-sea trial using electrooptic LiNbO/sub 3/ device by Namihira, Y., Wakabayashi, H.

“…An investigation of real-time polarization fluctuation measurements in an optical fiber submarine cable during laying and recovery in a 6000-m deep-sea trial…”
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Field demonstration of endless polarization control in 195-km installed optical fiber submarine cable at a sea depth of 2900 m by Namihira, Y., Kawazawa, T., Wakabayashi, H.

“…A low-insertion loss module with rotatable fractional wave plates was used to achieve endless polarization control at the output of a 195-km-long 2900-m…”
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Novel broadband dispersion compensating photonic crystal fibers: Applications in high-speed transmission systems by Begum, Feroza, Namihira, Yoshinori, Razzak, S.M. Abdur, Kaijage, Shubi, Hai, Nguyen Hoang, Kinjo, Tatsuya, Miyagi, Kazuya, Zou, Nianyu

“…This paper reveals a novel dispersion compensating photonic crystal fiber (DC-PCF) for wide-band high-speed transmission systems. The finite-difference method…”
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Tailoring supercontinuum generation using highly nonlinear photonic crystal fiber by Hossain, M.A., Namihira, Y., Islam, M.A., Razzak, S.M.A., Hirako, Y., Miyagi, K., Kaijage, S.F., Higa, H.

“…This paper discusses about the tailoring supercontinuum (SC) generation based on a highly nonlinear germanium (Ge) doped photonic crystal fiber (HNL-GePCF)…”
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Estimation of long-term transmission loss increase in silica-based optical fibers under hydrogen atmosphere by Kuwazuru, M., Namihira, Y., Mochizuki, K., Iwamoto, Y.

“…The irreversible loss increase in silica-based optical fibers due to hydrogen is discussed on the basis of results of various high-temperature tests. The…”
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Polarization mode dispersion measurements in an installed optical fiber submarine cable by Namihira, Y., Horiuchi, Y., Mochizuki, K., Wakabayashi, H.

“…Highly accurate polarization mode dispersion (PMD) measurement using an interferometric detection technique with AC modulation is discussed. This technique,…”
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Polarization diversity techniques for the use of coherent optical fiber submarine cable systems by Ryu, S., Yamamoto, S., Namihira, Y., Mochizuki, K., Wakabayashi, H.

“…Recent research and development work on coherent transmission systems, with emphasis on its application to optical-fiber submarine cable systems, are…”
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