Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994562
M. Suzuki, A. Kanno, T. Kawanishi, H. Sotobayashi
3.0-Gb/s signal transmission over a fiber-wireless hybrid link at the 22.5-GHz-band is demonstrated. A frequency-stabilized radio-over-fiber signal is generated using an optical phase-locked-loop driven by a synthesizer using a direct photonic up-conversion technique.
{"title":"22.5-GHz-band radio-over-fiber signal transmission over fiber-wireless hybrid link using optical phase-locked loop source","authors":"M. Suzuki, A. Kanno, T. Kawanishi, H. Sotobayashi","doi":"10.1109/MWP.2014.6994562","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994562","url":null,"abstract":"3.0-Gb/s signal transmission over a fiber-wireless hybrid link at the 22.5-GHz-band is demonstrated. A frequency-stabilized radio-over-fiber signal is generated using an optical phase-locked-loop driven by a synthesizer using a direct photonic up-conversion technique.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124884538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994505
K. Inagaki, T. Kawanishi, H. Iwai, Y. Oikawa
In order to measure frequency responses of O/ E conversion devices such as photodiodes (PDs), we developed a measurement instrument named lightwave frequency response analyzer (LFRA). LFRA, which is based on a heterodyne technique utilizing an optical modulator, provides precise measurement solution with cost effective instrument. Measured results of two individual LFRAs show standard deviations less than 0.15 dB and maximum instrument difference less than 0.7 dB.
{"title":"Development of lightwave frequency response analyzer for characterizing O/E conversion devices","authors":"K. Inagaki, T. Kawanishi, H. Iwai, Y. Oikawa","doi":"10.1109/MWP.2014.6994505","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994505","url":null,"abstract":"In order to measure frequency responses of O/ E conversion devices such as photodiodes (PDs), we developed a measurement instrument named lightwave frequency response analyzer (LFRA). LFRA, which is based on a heterodyne technique utilizing an optical modulator, provides precise measurement solution with cost effective instrument. Measured results of two individual LFRAs show standard deviations less than 0.15 dB and maximum instrument difference less than 0.7 dB.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"358 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122731222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994573
A. Kanno, P. Dat, I. Morohashi, I. Hosako, T. Kawanishi
Terahertz-wave signal transmission is demonstrated using quadrature amplitude modulation (QAM) by photonics. Small frequency fluctuations using a frequency-locked optical frequency comb are capable of generating a 80-MHz-bandwidth 16-ary-QAM signal with a data rate of 195 Mb/s.
{"title":"Multilevel signal transmission at 600 GHz","authors":"A. Kanno, P. Dat, I. Morohashi, I. Hosako, T. Kawanishi","doi":"10.1109/MWP.2014.6994573","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994573","url":null,"abstract":"Terahertz-wave signal transmission is demonstrated using quadrature amplitude modulation (QAM) by photonics. Small frequency fluctuations using a frequency-locked optical frequency comb are capable of generating a 80-MHz-bandwidth 16-ary-QAM signal with a data rate of 195 Mb/s.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"967 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123072735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994518
Yuya Yamaguchi, S. Nakajima, A. Kanno, T. Kawanishi, M. Izutsu, H. Nakajima
We demonstrated frequency-quadruple optical two-tone signal generation using integrated modulator driven by one-port RF signal input without optical filters. As a result, we generated the two-tone signal and the spurious suppression ratio was 27 dB.
{"title":"Frequency-quadruple optical two-tone signal generation using integrated high extinction-ratio Mach-Zehnder modulator","authors":"Yuya Yamaguchi, S. Nakajima, A. Kanno, T. Kawanishi, M. Izutsu, H. Nakajima","doi":"10.1109/MWP.2014.6994518","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994518","url":null,"abstract":"We demonstrated frequency-quadruple optical two-tone signal generation using integrated modulator driven by one-port RF signal input without optical filters. As a result, we generated the two-tone signal and the spurious suppression ratio was 27 dB.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115691462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994538
Y. Hung, S. Hwang
A photonic millimeter-wave frequency multiplication scheme with a tunable multiplication factor from 6 to 10 utilizing period-one dynamics of semiconductor lasers is demonstrated. The power adjustability and linewidth of the millimeter-wave is also investigated.
{"title":"Photonic millimeter-wave frequency multiplication with tunable multiplication factor utilizing period-one dynamics of semiconductor lasers","authors":"Y. Hung, S. Hwang","doi":"10.1109/MWP.2014.6994538","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994538","url":null,"abstract":"A photonic millimeter-wave frequency multiplication scheme with a tunable multiplication factor from 6 to 10 utilizing period-one dynamics of semiconductor lasers is demonstrated. The power adjustability and linewidth of the millimeter-wave is also investigated.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127677331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994500
A. Enokihara, Masashi Yamamoto, T. Kawai, T. Kawanishi
An electro-optic (EO) modulator integrated with the microwave planar circuit directly prepared onto a LiNbO3 substrate for low chirp performance and compact configuration is introduced. A microwave rat-race (RR) circuit, which operates as the 180-degree hybrid, is designed on a z-cut LiNbO3 substrate to create two modulation signals of the same amplitude in antiphase with each other from a single-input signal. Output ports of the RR were connected to the modulation electrodes on the substrate. The two signals drive two phase modulation parts of dual-electrode Mach-Zehnder modulator so that the symmetric interference are realized to obtain low-chirp intensity modulated light signals. The modulator was designed and fabricated for around 10 GHz modulation frequencies and 1550 nm light wavelength. The chirp parameters were measured to be less than 0.2 in the frequency range between 8 and 12 GHz. By compensating the unbalance of the light power splitting the chirp could be significantly reduced.
{"title":"Low chirp electro-optic intensity modulation using planar microwave 180-degree hybrid directly prepared on LiNbO3 substrate","authors":"A. Enokihara, Masashi Yamamoto, T. Kawai, T. Kawanishi","doi":"10.1109/MWP.2014.6994500","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994500","url":null,"abstract":"An electro-optic (EO) modulator integrated with the microwave planar circuit directly prepared onto a LiNbO3 substrate for low chirp performance and compact configuration is introduced. A microwave rat-race (RR) circuit, which operates as the 180-degree hybrid, is designed on a z-cut LiNbO3 substrate to create two modulation signals of the same amplitude in antiphase with each other from a single-input signal. Output ports of the RR were connected to the modulation electrodes on the substrate. The two signals drive two phase modulation parts of dual-electrode Mach-Zehnder modulator so that the symmetric interference are realized to obtain low-chirp intensity modulated light signals. The modulator was designed and fabricated for around 10 GHz modulation frequencies and 1550 nm light wavelength. The chirp parameters were measured to be less than 0.2 in the frequency range between 8 and 12 GHz. By compensating the unbalance of the light power splitting the chirp could be significantly reduced.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126665275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994583
T. Sakamoto, G. Lu, Tetsuya Kawanish
We propose and investigate Conjugated-Paired Radio-on-Fiber (C-RoF) transmission, which shows high tolerance against optical nonlinearity in optical fiber links, aiming for achieving higher RF link gain. It is shown that the nonlinear distortion is cancelled out by the C-RoF technique.
{"title":"Conjugated-Paired Radio-on-Fiber transmission scheme highly tolerant against optical fiber nonlinearity","authors":"T. Sakamoto, G. Lu, Tetsuya Kawanish","doi":"10.1109/MWP.2014.6994583","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994583","url":null,"abstract":"We propose and investigate Conjugated-Paired Radio-on-Fiber (C-RoF) transmission, which shows high tolerance against optical nonlinearity in optical fiber links, aiming for achieving higher RF link gain. It is shown that the nonlinear distortion is cancelled out by the C-RoF technique.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133187999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994520
I. Morohashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, I. Hosako
We propose a generation method for arbitrary patterned optical pulse trains for ultra-wideband signal generation in the terahertz (THz) range. Arbitrary-patterned optical pulse trains were generated by a Mach-Zehnder-modulator-based flat comb generator combined with a pulse picker driven by a pulse pattern generator.
{"title":"Generation of arbitrary patterned optical pulse trains for THz-UWB application","authors":"I. Morohashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, I. Hosako","doi":"10.1109/MWP.2014.6994520","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994520","url":null,"abstract":"We propose a generation method for arbitrary patterned optical pulse trains for ultra-wideband signal generation in the terahertz (THz) range. Arbitrary-patterned optical pulse trains were generated by a Mach-Zehnder-modulator-based flat comb generator combined with a pulse picker driven by a pulse pattern generator.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126027506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994548
A. Chiba, K. Takada, T. Kawanishi, T. Sakamoto, K. Higuma, M. Izutsu
We developed evaluation of crosstalk of an optical switch integrated on a lithium niobate substrate, without limitation of gain-bandwidth product. Utilizing optical modulation and frequency-domain analysis, crosstalk is successfully evaluated to be less than -48 dB for 10-GHz rf sinusoidal signal.
{"title":"Evaluation of crosstalk in optical cross-bar switch driven by high-frequency signal","authors":"A. Chiba, K. Takada, T. Kawanishi, T. Sakamoto, K. Higuma, M. Izutsu","doi":"10.1109/MWP.2014.6994548","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994548","url":null,"abstract":"We developed evaluation of crosstalk of an optical switch integrated on a lithium niobate substrate, without limitation of gain-bandwidth product. Utilizing optical modulation and frequency-domain analysis, crosstalk is successfully evaluated to be less than -48 dB for 10-GHz rf sinusoidal signal.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130708096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-19DOI: 10.1109/MWP.2014.6994508
Hiroyuki Koyano, Yuya Yamaguchi, A. Kanno, T. Kawanishi, M. Izutsu, H. Nakajima
Wavelength characteristics of the extinction ratio of optical Mach-Zehnder modulator using an active Y-branch is evaluated over C-band wavelengths. The observed extinction ratios are achieved greater than 60 dB at all of the wavelengths by optimization of applying voltage to the Y-branch by each wavelength.
{"title":"Wavelength characteristics of Mach-Zehnder modulator using active Y-branch","authors":"Hiroyuki Koyano, Yuya Yamaguchi, A. Kanno, T. Kawanishi, M. Izutsu, H. Nakajima","doi":"10.1109/MWP.2014.6994508","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994508","url":null,"abstract":"Wavelength characteristics of the extinction ratio of optical Mach-Zehnder modulator using an active Y-branch is evaluated over C-band wavelengths. The observed extinction ratios are achieved greater than 60 dB at all of the wavelengths by optimization of applying voltage to the Y-branch by each wavelength.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"60 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130846695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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