The Experts below are selected from a list of 16023 Experts worldwide ranked by ideXlab platform
Junya Kani - One of the best experts on this subject based on the ideXlab platform.
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Triple-Wavelength-Band WDM transmission technologies
Optical Fiber Communication Conference and Exhibit, 2002Co-Authors: Junya Kani, H. Suzuki, M. Teshima, N. Takachio, K. IwatsukiAbstract:This paper first described design guidelines of multi-Wavelength-Band WDM transmission systems that avoid the degradation caused by inter- and intra-Wavelength-Band nonlinear interactions. The guidelines indicate the best combination of Wavelength Bands for realizing triple-Wavelength-Band WDM transmission. After discussing the performance of multi-Wavelength-Band WDM transmission systems, a 1000-channel WDM carrier generator was demonstrated for realizing advanced triple-Wavelength-Band WDM transmission systems.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fiber
OFC IOOC . Technical Digest. Optical Fiber Communication Conference 1999 and the International Conference on Integrated Optics and Optical Fiber Commu, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultrawide-Band Wavelength-division multiplexing transmission over a dispersion shifted fiber utilizing the 1470-nm Band, the 1550-nm Band, and the 1590-nm Band is demonstrated for the first time to our knowledge.
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Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers
IEEE Photonics Technology Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, K. Hattori, T. Kanamori, Katsuji OguchiAbstract:Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers (DSF's) is demonstrated. A total of 54/spl times/10-Gb/s signals in the 1470-, 1550-, and 1590-nm Bands are transmitted through 240 km (3/spl times/80 km) DSF's. The effect of interWavelength-Band nonlinear interactions expected from the stimulated-Raman-scattering-induced excess loss are shown to be negligible.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fibre
Electronics Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultra-wideBand Wavelength division multiplexed transmission over a dispersion-shifted fibre utilising the S/sup +/-Band (1470 nm Band), M-Band (1550 nm Band), and L-Band (1590 nm Band) is demonstrated for the first time.
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wide Wavelength Band 1535 1560 nm and 1574 1600 nm 28 spl times 10 gbit s wdm transmission over 320 km dispersion shifted fibre
Electronics Letters, 1998Co-Authors: T Sakamoto, Makoto Jinno, Shigeki Aisawa, Junya Kani, M. Fukui, M. Yamada, K. OguchiAbstract:Wide Wavelength-Band (1535-1560 nm and 1574-1600 nm) 28/spl times/10 Gbit/s WDM transmission over a 320 km dispersion-shifted fibre, using both conventional and gain-shifted EDFAs, is successfully demonstrated. This is achieved by employing two techniques to suppress the various nonlinear effects that depend on chromatic dispersion values: unequal channel spacing for 1550 nm Band signals and dispersion pre-compensation for the 1550 and 1580 nm Bands.
Katsuji Oguchi - One of the best experts on this subject based on the ideXlab platform.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fiber
OFC IOOC . Technical Digest. Optical Fiber Communication Conference 1999 and the International Conference on Integrated Optics and Optical Fiber Commu, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultrawide-Band Wavelength-division multiplexing transmission over a dispersion shifted fiber utilizing the 1470-nm Band, the 1550-nm Band, and the 1590-nm Band is demonstrated for the first time to our knowledge.
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Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers
IEEE Photonics Technology Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, K. Hattori, T. Kanamori, Katsuji OguchiAbstract:Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers (DSF's) is demonstrated. A total of 54/spl times/10-Gb/s signals in the 1470-, 1550-, and 1590-nm Bands are transmitted through 240 km (3/spl times/80 km) DSF's. The effect of interWavelength-Band nonlinear interactions expected from the stimulated-Raman-scattering-induced excess loss are shown to be negligible.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fibre
Electronics Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultra-wideBand Wavelength division multiplexed transmission over a dispersion-shifted fibre utilising the S/sup +/-Band (1470 nm Band), M-Band (1550 nm Band), and L-Band (1590 nm Band) is demonstrated for the first time.
Makoto Jinno - One of the best experts on this subject based on the ideXlab platform.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fiber
OFC IOOC . Technical Digest. Optical Fiber Communication Conference 1999 and the International Conference on Integrated Optics and Optical Fiber Commu, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultrawide-Band Wavelength-division multiplexing transmission over a dispersion shifted fiber utilizing the 1470-nm Band, the 1550-nm Band, and the 1590-nm Band is demonstrated for the first time to our knowledge.
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Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers
IEEE Photonics Technology Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, K. Hattori, T. Kanamori, Katsuji OguchiAbstract:Triple-Wavelength-Band WDM transmission over cascaded dispersion-shifted fibers (DSF's) is demonstrated. A total of 54/spl times/10-Gb/s signals in the 1470-, 1550-, and 1590-nm Bands are transmitted through 240 km (3/spl times/80 km) DSF's. The effect of interWavelength-Band nonlinear interactions expected from the stimulated-Raman-scattering-induced excess loss are shown to be negligible.
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Trinal-Wavelength-Band WDM transmission over dispersion-shifted fibre
Electronics Letters, 1999Co-Authors: Junya Kani, Makoto Jinno, Shigeki Aisawa, T Sakamoto, K. Hattori, Katsuji OguchiAbstract:Ultra-wideBand Wavelength division multiplexed transmission over a dispersion-shifted fibre utilising the S/sup +/-Band (1470 nm Band), M-Band (1550 nm Band), and L-Band (1590 nm Band) is demonstrated for the first time.
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wide Wavelength Band 1535 1560 nm and 1574 1600 nm 28 spl times 10 gbit s wdm transmission over 320 km dispersion shifted fibre
Electronics Letters, 1998Co-Authors: T Sakamoto, Makoto Jinno, Shigeki Aisawa, Junya Kani, M. Fukui, M. Yamada, K. OguchiAbstract:Wide Wavelength-Band (1535-1560 nm and 1574-1600 nm) 28/spl times/10 Gbit/s WDM transmission over a 320 km dispersion-shifted fibre, using both conventional and gain-shifted EDFAs, is successfully demonstrated. This is achieved by employing two techniques to suppress the various nonlinear effects that depend on chromatic dispersion values: unequal channel spacing for 1550 nm Band signals and dispersion pre-compensation for the 1550 and 1580 nm Bands.
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Wide Wavelength Band (1535-1560 nm and 1574-1600 nm), 28/spl times/10 Gbit/s WDM transmission over 320 km dispersion-shifted fibre
Electronics Letters, 1998Co-Authors: T Sakamoto, Makoto Jinno, Shigeki Aisawa, Junya Kani, M. Fukui, M. Yamada, K. OguchiAbstract:Wide Wavelength-Band (1535-1560 nm and 1574-1600 nm) 28/spl times/10 Gbit/s WDM transmission over a 320 km dispersion-shifted fibre, using both conventional and gain-shifted EDFAs, is successfully demonstrated. This is achieved by employing two techniques to suppress the various nonlinear effects that depend on chromatic dispersion values: unequal channel spacing for 1550 nm Band signals and dispersion pre-compensation for the 1550 and 1580 nm Bands.
Hyo-hoon Park - One of the best experts on this subject based on the ideXlab platform.
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Comparison of 1545 nm pump to 1480 nm pump for high power long-Wavelength-Band erbium-doped fibre amplifier
Electronics Letters, 2003Co-Authors: Bo-hun Choi, Hyo-hoon ParkAbstract:A new pump Wavelength of 1545 nm for the long-Wavelength-Band erbium-doped fibre amplifier shows higher power conversion efficiency than the conventional 1480 nm pump for high power Wavelength division multiplexing input signals.
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New pump Wavelength of 1540-nm Band for long-Wavelength-Band erbium-doped fiber amplifier (L-Band EDFA)
IEEE Journal of Quantum Electronics, 2003Co-Authors: Bo-hun Choi, Hyo-hoon ParkAbstract:A long-Wavelength-Band erbium-doped fiber amplifier (L-Band EDFA) using a pump Wavelength source of 1540-nm Band has been extensively investigated from a small single channel input signal to high-power Wavelength division multiplexing (WDM) signals. The small-signal gain coefficient of 1545-nm pumping among the 1540-nm Band is 2.25 times higher compared to the conventional 1480-nm pumping. This improvement in gain coefficient is not limited by the pumping direction. The cause for this high coefficient is explained by analyzing forward- and backward-amplified spontaneous emission spectra. The gain spectra as a function of a pump Wavelength suggest that a broadBand pump source as well as a single Wavelength pump can be used as a 1540-nm-Band pump. In the experiment for high-power WDM signals, the power conversion efficiency for 256 WDM channel input is 48.5% with 1545-nm pumping. This result shows more than 20% improvement compared with the previous highest value for the L-Band EDFA. Finally, the 1545-nm bidirectionally pumped EDFA is applied as a second stage amplifier in an in-line amplifier of an optical communication link with a 1480-nm pumped first stage EDFA, in which the input power of the second-stage EDFA is +2.2 dBm. The power conversion efficiency yields a 38% improvement without noise figure degradation compared with the case of 1480-nm pumping.
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Investigation of pump Wavelength dependence of long-Wavelength-Band erbium-doped fiber amplifier using 1530 nm-Band pump for WDM amplification
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001Co-Authors: Bo-hun Choi, Hyo-hoon ParkAbstract:The 1530 nm Band was investigated as a new pump Wavelength Band of long-Wavelength-Band Er/sup 3+/-doped fiber amplifier and compared with the conventional 1480 nm Band. The gain coefficients of 1530 nm Band pumping were two times greater than those of 1480 nm pumping.
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High-gain coefficient long-Wavelength-Band erbium-doped fiber amplifier using 1530-nm Band pump
IEEE Photonics Technology Letters, 2001Co-Authors: Bo-hun Choi, Hyo-hoon ParkAbstract:A 1530-nm Band has been studied as a pump Wavelength for the long-Wavelength-Band erbium-doped fiber amplifier (L-Band EDFA). The pump source is built using a tunable light source and cascaded conventional-Band (C-Band) EDFA. The L-Band EDFA uses a forward pumping scheme. Within the 1530-nm Band, the 1545-nm pump demonstrates 0.45-dB/mW gain coefficient, which is twice better than that of conventional 1480-nm pumped EDFA. The noise figure of the 1530-nm pump is at worst 6.36 dB, which is 0.75 dB higher than that of the 1480-nm pumped EDFA. Such high-gain coefficient indicates that the L-Band EDFA consumes low power.
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Characteristics of long-Wavelength-Band EDFA pumped by 1.53 /spl mu/m Band
Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505), 2000Co-Authors: Bo-hun Choi, Hyo-hoon ParkAbstract:Summary form only given. The dependence of pump Wavelength for the amplification characteristics of a Er/sup 3+/-doped fiber amplifier (EDFA) has been reported for 0.8, 0.98, or 1.48 /spl mu/m Band, to date now most of long-Wavelength-Band (L-Band) EDFA are using these pump Bands. In this paper, 1.53 /spl mu/m Band is proposed and intensively investigated as new pump Wavelength of L-Band EDFA for the fist time. Power conversion efficiency (PCE), gain coefficient and noise figure (NF) for pumping efficiency were measured and compared with 1.48 /spl mu/m pumped L-Band EDFA.
Seunghwan Chung - One of the best experts on this subject based on the ideXlab platform.
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An application of polymer holographic grating with the frustrated-total-internal-reflection coupling structure to Wavelength-Band selection for optical wireless communication
Practical Holography XX: Materials and Applications, 2006Co-Authors: Seunghwan Chung, Dong Il YeomAbstract:Spatial confinement of paths in wireless optical communication enables Bandwidth and resources reuse in adjacent environments. This property can also result in undesirable shadowing that occurs whenever an obstacle blocks signal paths between transceivers. Shadowing can result in service interruption and increased error rate. Spatial coding is possible to improve link performance and alleviate shadowing effect in wireless communication environment. In this paper, we propose an application of polymer holographic grating with the frustrated-total-internal-reflection (FTIR) structure to Wavelength-Band selection for optical wireless communication. A polymer holographic grating is fabricated by two beam interference at the Wavelength of 532 nm. In the system, a multi-channel source is incident to the FTIR coupling structure which is made by a prism and polymer holographic gratings and acts as a Wavelength-Band selective filter. This scheme can be used in various systems which need flexible optical path and relative time delay according to each Wavelength-Band.
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Wavelength-Band Selection Filter Based on Surface Plasmon Resonance and Phase Conjugation Holography
IEEE Photonics Technology Letters, 2006Co-Authors: Seunghwan ChungAbstract:A Wavelength-Band selection filter using a metal-coated polymer holographic grating and utilizing surface plasmon resonance for use in optical wireless communication is proposed. The proposed device is mainly composed of a total internal reflection prism, the hypotenuse surface of which is covered with a metal-coated volumetric polymer holographic grating. The feasibility of the proposed device for use as a Wavelength-Band selection filter was tested experimentally
