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Displaying 1-11 of 11 articles from this issue
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Article type: Cover
Pages Cover1-
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (55K) -
K. Ikeda, T. Kuri, A. Stohr, Y. Takahashi, K. KitayamaArticle type: Article
Session ID: ROFT2001-75
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSFull-duplex, 156Mbit/s, 60GHz-band millimeter-wave fiber-radio signal transmission over 25km-long SMF is experimentally demonstrated for the fist time by using single 2-RF-port EAT (Electroabsorption Transceiver). Optical pilot tone and bandpass filters are used for the photonic downconversion and photonic upconversion, converting frequencies between millimeter-wave signal and intermediate frequency (IF) signal. These signals have no significant chromatic dispersion effect. The approach to single-EAT-BS will become a powerful candidate for fiber-radio access system.View full abstractDownload PDF (654K) -
Toshiaki KURI, Ken-ichi KITAYAMA, Kiyotaka MURASHIMAArticle type: Article
Session ID: ROFT2001-76
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA novel optical spectrum design for higher DWDM transmission of 60-GHz-band radio-on-fiber systems with square-like response fiber Bragg gratings (FBGs) is proposed. Although the DSB-formatted fiber-radio signals are multiplexed with the spectral overlap and transmitted, each optical signal is recovered without any serious impact due to the interchannel interference. Since the fiber-radio signal becomes a single sideband (SSB) format at the same time of the dropping, there is no serious fiber-dispersion problem in the proposed scheme. Error-free DWDM transmission of two optical-frequency-interleaving 60-GHz fiber-radio signals with the FBG is also experimentally demonstrated.View full abstractDownload PDF (698K) -
The Effects of Mode Partition Noise on Radio-over-Fiber Systems with Fabry-Perot Lasers for IMT-2000Ichiro Seto, Tazuko Tomioka, Shigeru OhshimaArticle type: Article
Session ID: ROFT2001-77
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSRadio-over-fiber (ROF) techniques with Fabry-Perot (FP) lasers have been expected for wireless communication infrastructures as cost-effective solutions. We have been investigated mode partition noise (MPN), which is a unique disadvantage to FP lasers. In this paper, we show that MPN degrades the performance of spectrum mask and dynamic range severely and limits the operating of ROF systems for IMT-2000. It is also shown that a technique of inserting an optical isolator is efficient for suppressing the effects of MPN and possible transmission distance to meet the 3GPP standards can be extended drastically.View full abstractDownload PDF (813K) -
Tsukasa Yamashita, Hiroyuki Toda, Zen Kawasaki, Toshiaki Kuri, Ken-ich ...Article type: Article
Session ID: ROFT2001-78
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe propose a DWDM mm-wave fiber-radio system with optical frequency interleaving for high spectral efficiency. In this paper, we show perliminary experimental result that 2-channel optical DSB signals carrying 60GHz mm-waves, multiplexed by optical frequency interleaving are demultiplexed. We obtain error-free operation (BER<10^<-10>) with the channel separation of only 10GHz. We also show theoretical analysis of power penalty due to interchannel crosstalk.View full abstractDownload PDF (489K) -
Kenyo Tobita, Kenjiro Yano, Shinya Abe, Yoshiya Isono, Naomichi SuzukiArticle type: Article
Session ID: ROFT2001-79
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe developed SFP (Small Form-factor Pluggable) short wavelength optical transceiver of small size (volume 8.4ml) and low power consumption (0.5 W) that conformed to FC-PI and also SFP MSA that are a de facto standard. Adopting Duplex-LC and also MT-RJ connector to optical interface, miniaturization has been materialized in comparison with GBIC (Duplex-SC connector adoption). Furthermore, the interconnection is possible in all of a conventional optical transceiver (CD-LD) and confirmed a fine characteristic in DVT.View full abstractDownload PDF (1040K) -
Keiichiro Kagawa, Tomohiro Nishimura, Takao Hirai, Jun Ohta, Masahiro ...Article type: Article
Session ID: ROFT2001-80
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe propose a new optical wireless LAN (local area network) system based on a vision chip. The features of the proposed system are 1) free from bulky mechanical parts, 2) cheap plastic lenses can be used for the optical system, and 3) good programmability based on software image processing such as node detection and tracing. The vision chip designed for optical wireless LAN has two modes:high-speed focused readout for communication and normal image readout. With a device simulator, we estimated photo-responsibilities for several photodiodes with different structures using a 0.8μm BiCMOS process. Based on the simulation results, the vision chip with 8x8 pixels using a high-speed photodiode was designed.View full abstractDownload PDF (877K) -
Masaru Fuse, Seiho Kitaji, Susumu MorikuraArticle type: Article
Session ID: ROFT2001-81
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSFor providing both communication and broadcasting services on an optical access system, we analysed the performance of a super wids-band FM technique, which make it possible to overlay multi-channel RF video signals on a baseband digital signal. Drgradation factors specific for that system, which are the excessive shot noise generated in optical multiplexing, the crosstalk of the wide-band FM technique onto the baseband and the beat noise between the desired wide-band FM signal and the undesired digital signal induced in the FM demodulator, are discussed. Taking account of these factors, the require condition of the optical received powers is designed for transmitting simultaneously the baseband digital signal of 156Mbps and RF signals of AM 40chs.View full abstractDownload PDF (882K) -
Kenji SUZUKI, Yosuke ENDO, Kimiyuki OYAMADAArticle type: Article
Session ID: ROFT2001-82
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA tunable optical band-pass filter with a narrow bandwidth and fast tuning speed is essential for large-scale video-routing networks using dense wavelength division multiplexing. We devised a high finesse optical filter that is constructed by cascading moderate-finesse Fabry-Perot filters of different free spectral ranges. We demonstrated a two-stage Fabry-Perot optical waveguide filter. The measured transmission characteristic agreed with the theoretical curve ignoring affection of an inter-filter cavity. The number of DWDM channels with this filter was also calculated. We also analyzed the relations of full width half maximum and BER, the influence due to the deviation of the center frequency of the two-stage Fabry-Perot optical waveguide filter by the simulation. We showed the result of transmission on HDTV signals.View full abstractDownload PDF (474K) -
Article type: Appendix
Pages App1-
Published: September 07, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (88K)
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