The Experts below are selected from a list of 1251 Experts worldwide ranked by ideXlab platform
H. Wakabayashi - One of the best experts on this subject based on the ideXlab platform.
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Fiber Chromatic Dispersion equalization at the receiving terminal of IM-DD ultra-long distance optical communication systems
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the effect of Fiber Chromatic Dispersion equalization at the receiving terminal for transoceanic optical communication systems. We used a 1000-km Fiber loop with 31 Er-doped Fiber amplifiers for the experiments, and measured the bit-error-rate characteristics after 9000-km transmission. Accumulated Chromatic Dispersion originating from the discrepancy between the signal wavelength and the system zero Dispersion wavelength was equalized by the equalization Fiber at the receiving terminal. We used both normal and anomalous Dispersion Fibers at the receiving end. The results have shown that the equalization method of the Fiber Chromatic Dispersion at the receiving terminal is useful with some limitations for ultra-long distance optical communication systems.
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Performance evaluation of the different types of Fiber-Chromatic-Dispersion equalization for IM-DD ultralong-distance optical communication systems with Er-doped Fiber amplifiers
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance of different Fiber-Chromatic-Dispersion-equalization methodologies for ultralong distance IM-DD optical communication systems that use Er-doped Fiber amplifier repeaters. The experiment used a 1000 km Fiber loop consisting of 30 Dispersion-shifted Fiber spans and 31 Er-doped Fiber amplifiers. We changed the insertion point of the normal single-mode Fiber for equalization to change the shape of the accumulated Chromatic Dispersion. Comparison of the longest transmission distance and the width of the 9000 km transmissible window are discussed for several types of Dispersion equalization. The results indicate that the best type of the Dispersion equalization for ultralong distance IM-DD optical communication systems is to install Dispersion-shifted Fibers with short sections of normal single-mode Fibers to compensate the accumulated Dispersion.
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The experimental study of the effect of Fiber Chromatic Dispersion upon IM-DD ultra-long distance optical communication systems with Er-doped Fiber amplifiers using a 1000 km Fiber loop
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance difference of ultra-long distance optical communication systems with Er-doped Fiber amplifier repeaters due to Fiber Chromatic Dispersion effect. A 1000 km Fiber loop with 31 Er-doped Fiber amplifiers was used for the experiments. We have changed the system zero Dispersion wavelength by changing the length of the normal single-mode Fiber at the end of the Fiber loop, and measured the bit-error-rate after transmission. Comparison of the longest transmission distance and the width of the 9000 km transmissible window were discussed for various system zero Dispersion wavelengths. The results have shown that the difference between the gain peak wavelength of the amplifier chain and the system zero Dispersion wavelength caused degradation of the system performance, and the degree of the degradation was almost symmetrical from the gain peak wavelength.
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Over 1000 km FSK heterodyne transmission system experiment using erbium-doped optical Fiber amplifiers and conventional single-mode Fibers
IEEE Photonics Technology Letters, 1990Co-Authors: N. Edagawa, Y. Yoshida, H. WakabayashiAbstract:The influence of spontaneous emission noise on coherent transmission systems using multistage erbium-doped optical Fiber amplifiers is experimentally examined. A frequency-shift keying (FSK) heterodyne transmission experiment was successfully performed at 560 Mb/s through 1028 km of Fiber using ten cascaded Fiber amplifiers and conventional single-mode Fibers with a zero Dispersion wavelength of around 1.3 mu m. In the experiment, no transmission penalty due to accumulated spontaneous emission noise or to Fiber Chromatic Dispersion was observed.
N. Edagawa - One of the best experts on this subject based on the ideXlab platform.
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Fiber Chromatic Dispersion equalization at the receiving terminal of IM-DD ultra-long distance optical communication systems
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the effect of Fiber Chromatic Dispersion equalization at the receiving terminal for transoceanic optical communication systems. We used a 1000-km Fiber loop with 31 Er-doped Fiber amplifiers for the experiments, and measured the bit-error-rate characteristics after 9000-km transmission. Accumulated Chromatic Dispersion originating from the discrepancy between the signal wavelength and the system zero Dispersion wavelength was equalized by the equalization Fiber at the receiving terminal. We used both normal and anomalous Dispersion Fibers at the receiving end. The results have shown that the equalization method of the Fiber Chromatic Dispersion at the receiving terminal is useful with some limitations for ultra-long distance optical communication systems.
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Performance evaluation of the different types of Fiber-Chromatic-Dispersion equalization for IM-DD ultralong-distance optical communication systems with Er-doped Fiber amplifiers
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance of different Fiber-Chromatic-Dispersion-equalization methodologies for ultralong distance IM-DD optical communication systems that use Er-doped Fiber amplifier repeaters. The experiment used a 1000 km Fiber loop consisting of 30 Dispersion-shifted Fiber spans and 31 Er-doped Fiber amplifiers. We changed the insertion point of the normal single-mode Fiber for equalization to change the shape of the accumulated Chromatic Dispersion. Comparison of the longest transmission distance and the width of the 9000 km transmissible window are discussed for several types of Dispersion equalization. The results indicate that the best type of the Dispersion equalization for ultralong distance IM-DD optical communication systems is to install Dispersion-shifted Fibers with short sections of normal single-mode Fibers to compensate the accumulated Dispersion.
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The experimental study of the effect of Fiber Chromatic Dispersion upon IM-DD ultra-long distance optical communication systems with Er-doped Fiber amplifiers using a 1000 km Fiber loop
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance difference of ultra-long distance optical communication systems with Er-doped Fiber amplifier repeaters due to Fiber Chromatic Dispersion effect. A 1000 km Fiber loop with 31 Er-doped Fiber amplifiers was used for the experiments. We have changed the system zero Dispersion wavelength by changing the length of the normal single-mode Fiber at the end of the Fiber loop, and measured the bit-error-rate after transmission. Comparison of the longest transmission distance and the width of the 9000 km transmissible window were discussed for various system zero Dispersion wavelengths. The results have shown that the difference between the gain peak wavelength of the amplifier chain and the system zero Dispersion wavelength caused degradation of the system performance, and the degree of the degradation was almost symmetrical from the gain peak wavelength.
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Over 1000 km FSK heterodyne transmission system experiment using erbium-doped optical Fiber amplifiers and conventional single-mode Fibers
IEEE Photonics Technology Letters, 1990Co-Authors: N. Edagawa, Y. Yoshida, H. WakabayashiAbstract:The influence of spontaneous emission noise on coherent transmission systems using multistage erbium-doped optical Fiber amplifiers is experimentally examined. A frequency-shift keying (FSK) heterodyne transmission experiment was successfully performed at 560 Mb/s through 1028 km of Fiber using ten cascaded Fiber amplifiers and conventional single-mode Fibers with a zero Dispersion wavelength of around 1.3 mu m. In the experiment, no transmission penalty due to accumulated spontaneous emission noise or to Fiber Chromatic Dispersion was observed.
H. Taga - One of the best experts on this subject based on the ideXlab platform.
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Fiber Chromatic Dispersion equalization at the receiving terminal of IM-DD ultra-long distance optical communication systems
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the effect of Fiber Chromatic Dispersion equalization at the receiving terminal for transoceanic optical communication systems. We used a 1000-km Fiber loop with 31 Er-doped Fiber amplifiers for the experiments, and measured the bit-error-rate characteristics after 9000-km transmission. Accumulated Chromatic Dispersion originating from the discrepancy between the signal wavelength and the system zero Dispersion wavelength was equalized by the equalization Fiber at the receiving terminal. We used both normal and anomalous Dispersion Fibers at the receiving end. The results have shown that the equalization method of the Fiber Chromatic Dispersion at the receiving terminal is useful with some limitations for ultra-long distance optical communication systems.
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Performance evaluation of the different types of Fiber-Chromatic-Dispersion equalization for IM-DD ultralong-distance optical communication systems with Er-doped Fiber amplifiers
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance of different Fiber-Chromatic-Dispersion-equalization methodologies for ultralong distance IM-DD optical communication systems that use Er-doped Fiber amplifier repeaters. The experiment used a 1000 km Fiber loop consisting of 30 Dispersion-shifted Fiber spans and 31 Er-doped Fiber amplifiers. We changed the insertion point of the normal single-mode Fiber for equalization to change the shape of the accumulated Chromatic Dispersion. Comparison of the longest transmission distance and the width of the 9000 km transmissible window are discussed for several types of Dispersion equalization. The results indicate that the best type of the Dispersion equalization for ultralong distance IM-DD optical communication systems is to install Dispersion-shifted Fibers with short sections of normal single-mode Fibers to compensate the accumulated Dispersion.
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The experimental study of the effect of Fiber Chromatic Dispersion upon IM-DD ultra-long distance optical communication systems with Er-doped Fiber amplifiers using a 1000 km Fiber loop
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance difference of ultra-long distance optical communication systems with Er-doped Fiber amplifier repeaters due to Fiber Chromatic Dispersion effect. A 1000 km Fiber loop with 31 Er-doped Fiber amplifiers was used for the experiments. We have changed the system zero Dispersion wavelength by changing the length of the normal single-mode Fiber at the end of the Fiber loop, and measured the bit-error-rate after transmission. Comparison of the longest transmission distance and the width of the 9000 km transmissible window were discussed for various system zero Dispersion wavelengths. The results have shown that the difference between the gain peak wavelength of the amplifier chain and the system zero Dispersion wavelength caused degradation of the system performance, and the degree of the degradation was almost symmetrical from the gain peak wavelength.
Y. Yoshida - One of the best experts on this subject based on the ideXlab platform.
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Fiber Chromatic Dispersion equalization at the receiving terminal of IM-DD ultra-long distance optical communication systems
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the effect of Fiber Chromatic Dispersion equalization at the receiving terminal for transoceanic optical communication systems. We used a 1000-km Fiber loop with 31 Er-doped Fiber amplifiers for the experiments, and measured the bit-error-rate characteristics after 9000-km transmission. Accumulated Chromatic Dispersion originating from the discrepancy between the signal wavelength and the system zero Dispersion wavelength was equalized by the equalization Fiber at the receiving terminal. We used both normal and anomalous Dispersion Fibers at the receiving end. The results have shown that the equalization method of the Fiber Chromatic Dispersion at the receiving terminal is useful with some limitations for ultra-long distance optical communication systems.
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Performance evaluation of the different types of Fiber-Chromatic-Dispersion equalization for IM-DD ultralong-distance optical communication systems with Er-doped Fiber amplifiers
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance of different Fiber-Chromatic-Dispersion-equalization methodologies for ultralong distance IM-DD optical communication systems that use Er-doped Fiber amplifier repeaters. The experiment used a 1000 km Fiber loop consisting of 30 Dispersion-shifted Fiber spans and 31 Er-doped Fiber amplifiers. We changed the insertion point of the normal single-mode Fiber for equalization to change the shape of the accumulated Chromatic Dispersion. Comparison of the longest transmission distance and the width of the 9000 km transmissible window are discussed for several types of Dispersion equalization. The results indicate that the best type of the Dispersion equalization for ultralong distance IM-DD optical communication systems is to install Dispersion-shifted Fibers with short sections of normal single-mode Fibers to compensate the accumulated Dispersion.
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The experimental study of the effect of Fiber Chromatic Dispersion upon IM-DD ultra-long distance optical communication systems with Er-doped Fiber amplifiers using a 1000 km Fiber loop
Journal of Lightwave Technology, 1994Co-Authors: H. Taga, S. Yamamoto, N. Edagawa, Y. Yoshida, S. Akiba, H. WakabayashiAbstract:We have evaluated the transmission performance difference of ultra-long distance optical communication systems with Er-doped Fiber amplifier repeaters due to Fiber Chromatic Dispersion effect. A 1000 km Fiber loop with 31 Er-doped Fiber amplifiers was used for the experiments. We have changed the system zero Dispersion wavelength by changing the length of the normal single-mode Fiber at the end of the Fiber loop, and measured the bit-error-rate after transmission. Comparison of the longest transmission distance and the width of the 9000 km transmissible window were discussed for various system zero Dispersion wavelengths. The results have shown that the difference between the gain peak wavelength of the amplifier chain and the system zero Dispersion wavelength caused degradation of the system performance, and the degree of the degradation was almost symmetrical from the gain peak wavelength.
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Over 1000 km FSK heterodyne transmission system experiment using erbium-doped optical Fiber amplifiers and conventional single-mode Fibers
IEEE Photonics Technology Letters, 1990Co-Authors: N. Edagawa, Y. Yoshida, H. WakabayashiAbstract:The influence of spontaneous emission noise on coherent transmission systems using multistage erbium-doped optical Fiber amplifiers is experimentally examined. A frequency-shift keying (FSK) heterodyne transmission experiment was successfully performed at 560 Mb/s through 1028 km of Fiber using ten cascaded Fiber amplifiers and conventional single-mode Fibers with a zero Dispersion wavelength of around 1.3 mu m. In the experiment, no transmission penalty due to accumulated spontaneous emission noise or to Fiber Chromatic Dispersion was observed.
Ke Wu - One of the best experts on this subject based on the ideXlab platform.
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Enabling techniques for broadband and millimetre-wave hybrid photonic wireless components and systems
Photonics, 2010Co-Authors: Bouchaib Hraimel, Xiupu Zhang, Ebrahim Mortazy, Ke WuAbstract:Enabling techniques are studied for broadband and millimetre-wave radio-over-Fiber components and systems. The use of substrate integrated circuits and design issues such as Fiber Chromatic Dispersion, nonlinear distortion, modulation efficiency, and millimetre-wave distribution are considered.
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precompensated optical double sideband subcarrier modulation immune to Fiber Chromatic Dispersion induced radio frequency power fading
IEEE\ OSA Journal of Optical Communications and Networking, 2009Co-Authors: Bouchaib Hraimel, Xiupu Zhang, Mohmoud Mohamed, Ke WuAbstract:We propose and demonstrate a new optical double-sideband modulation technique that is immune to Fiber Chromatic Dispersion and thus free of Dispersion-induced RF power fading. The proposed modulation technique also provides a 3 dB improvement of RF power compared with optical single-sideband modulation. The proposed modulation technique is analyzed in theory and simulation. It is shown that for a given Fiber length an optimum electrical phase shift exists to completely cancel the Dispersion-induced RF power fading. We verify this proposed modulation technique experimentally for a single-tone RF signal and for a multiband orthogonal frequency division multiplexing ultrawideband signal.
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Performance improvement of multiband OFDM ultra-wideband over Fiber link using a novel optical double sideband subcarrier modulation scheme
2009 IEEE MTT-S International Microwave Symposium Digest, 2009Co-Authors: Bouchaib Hraimel, Xiupu Zhang, Mohmoud Mohamed, M. N. Sakib, Morris M. Z. Wang, Ke WuAbstract:Performance of a multiband (MB) orthogonal frequency division multiplexing (OFDM) ultra wideband (UWB) over Fiber system is investigated in this paper using an optical double sideband subcarrier modulation that is immune to Fiber Chromatic Dispersion induced RF power fading. It is found that the proposed modulation technique enhances the error vector magnitude (EVM) performance of MB-UWB OFDM and improves the power efficiency by 3 dB compared to optical single sideband subcarrier modulation counterpart.