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2015 IEEE International Broadband and Photonics Conference (IBP)最新文献

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Comparison of different space time coding for transmit diversity in VLC systems with CSK modulation CSK调制下VLC系统发射分集的空时编码比较
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230763
Linqiong Jia, Jun-Bo Wang, Jin-yuan Wang, Ming Chen
{"title":"Comparison of different space time coding for transmit diversity in VLC systems with CSK modulation","authors":"Linqiong Jia, Jun-Bo Wang, Jin-yuan Wang, Ming Chen","doi":"10.1109/IBP.2015.7230763","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230763","url":null,"abstract":"This paper investigates the transmit diversity techniques in visible light communication system with color shift keying modulation using RGB LEDs. The Alamouti-type space time coding scheme suitable for CSK signals in VLC systems is proposed, which is a modification of Alamouti coding scheme in RF wireless systems. The signal constellations of CSK signals are redesigned to be applied in the Alamouti-type coding scheme. Besides, The repetition coding is presented as well. Performance comparison has been made between the Alamouti-type coding scheme and the repetition coding scheme. It is find out that both coding schemes are able to extract full diversity order. Simulation results demonstrate that repetition coding performs almost the same as Alamouti-type coding when the same constellations are employed. Our findings clearly point out that the deployment of Alamouti-type coding is not necessary in VLC systems with CSK modulation and the reason for this conclusion is discussed at last.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114661891","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}
引用次数: 3
Enhanced performance of FSO link using OFDM and comparison with traditional TDM-FSO link 利用OFDM技术提高FSO链路的性能，并与传统TDM-FSO链路进行比较
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230767
Pravindra Kumar, A. Srivastava
{"title":"Enhanced performance of FSO link using OFDM and comparison with traditional TDM-FSO link","authors":"Pravindra Kumar, A. Srivastava","doi":"10.1109/IBP.2015.7230767","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230767","url":null,"abstract":"Free space optical (FSO) communication systems with its high data rate, capacity same as optical fiber and secure communication over unlicensed spectrum have become a promising technology where the installation of optical fiber is not possible. However, bit-error-rate (BER) performance of FSO link depends on the atmospheric conditions and turbulence strength. In this paper, the performance of intensity modulation/direct detection-time division multiplexed-FSO (IM/DD-TDM-FSO) link and IM/DD-orthogonal frequency division multiplexed-FSO (IM/DD-OFDM-FSO) link are analytically compared. BER is expressed assuming the turbulence as Gamma-Gamma distribution. At BER of 10-3, there is 14.7 dB gain in signal-to-noise ratio (SNR) and 7.2 dB improvement in receiver sensitivity with OFDM-FSO link as compared to traditional TDM-FSO link.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125558461","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}
引用次数: 12
Refractive index sensor with asymmetrical tapered fiber based on evanescent field sensing 基于倏逝场传感的非对称锥形光纤折射率传感器
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230762
Y. M. Kamil, M. A. Mustapa, M. A. Bakar, B. Musa, Amir Syahir, M. Yaacob, M. Mahdi
{"title":"Refractive index sensor with asymmetrical tapered fiber based on evanescent field sensing","authors":"Y. M. Kamil, M. A. Mustapa, M. A. Bakar, B. Musa, Amir Syahir, M. Yaacob, M. Mahdi","doi":"10.1109/IBP.2015.7230762","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230762","url":null,"abstract":"We report and demonstrate a single-mode asymmetric tapered fiber as a refractive index (RI) sensor based on evanescent field sensing. The proposed setup managed to sense the changes of RI when the tapered region was exposed to different concentrations of Sodium chloride (NaCl). This was possible due to the output interference spectrum shifting in response to the changes of RI. Different environmental sensitivities were achieved by manipulating the transition lengths of the tapered fiber. Experimental results depict RI sensitivities of 3914.7 nm/RIU (refractive index unit) and 3395.7 nm/RIU for taper profiles with down-taper transition lengths of 2 mm and 8 mm, respectively, which is higher than previously reported asymmetric taper RI sensors. Such findings may find itself beneficial in low cost, reliable and simplified sensors.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134040008","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}
引用次数: 2
Characterization of Nb-doped MgZnO films grown by a radio-frequency magnetron sputtering system 射频磁控溅射系统生长nb掺杂MgZnO薄膜的表征
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230765
Kuang-Po Hsueh, Wen-Yen Lin, H. Chiu, Hsiang-Chun Wang, J. Sheu, Y. Yeh
{"title":"Characterization of Nb-doped MgZnO films grown by a radio-frequency magnetron sputtering system","authors":"Kuang-Po Hsueh, Wen-Yen Lin, H. Chiu, Hsiang-Chun Wang, J. Sheu, Y. Yeh","doi":"10.1109/IBP.2015.7230765","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230765","url":null,"abstract":"Niobium-doped MgxZn1-xO (Nb-MZO) mixed oxide films with high transmittance were successfully deposited on sapphire substrates by a radio-frequency (RF) magnetron sputtering using a 4-in ZnO/MgO/NbOx (75/20/5 wt %) target. In this study, the films were analyzed through a Hall test, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmittance. The XRD results showed MgO2 (002) wurtzite peak as well as an MgxZn1-xO (111)-cubic peak. The absorption edges of these Nb-MZO films were located in the UV region, implying that the MgO content of the Nb-MZO layer increased the bandgaps. The XPS spectra of Nb-MZO films were also used to analyze the composition of the as-grown and annealed Nb-MZO films. These results indicate that the Nb-MZO films are ideal for use as transparent contact layers.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134216923","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}
引用次数: 1
Dispersion and nonlinearity compensation for a Nyquist-WDM system using OPC and Raman Amplification 基于OPC和拉曼放大的Nyquist-WDM系统色散和非线性补偿
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230768
R. Jee, S. Chandra
{"title":"Dispersion and nonlinearity compensation for a Nyquist-WDM system using OPC and Raman Amplification","authors":"R. Jee, S. Chandra","doi":"10.1109/IBP.2015.7230768","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230768","url":null,"abstract":"We have investigated through simulation study the transmission performance of PM-16 QAM based Nyquist-WDM transmission system over 10×80 km using a combination of mid-span spectral inversion (OPC) and distributed Raman amplifier (DRA). In this study, we have focused on the deployment of spectral inversion technique (OPC) and optimum Raman amplifier configuration towards improvement of system performance. Comparison is also done, where no OPC is used. Our analysis shows that, introduction of DRA with optimized pumping scheme significantly reduce fiber non-linearity, which improves of the system performance compared to the situation where only spectral inversion technique is used.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132445606","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}
引用次数: 1
Electrical and optical response of depleting carrier in active PIN silicon waveguide 有源PIN硅波导中耗尽载流子的电光响应
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230764
Rezwanul Haque Khandokar, M. Bakaul, S. Skafidas, T. Nirmalathas, M. Asaduzzaman
{"title":"Electrical and optical response of depleting carrier in active PIN silicon waveguide","authors":"Rezwanul Haque Khandokar, M. Bakaul, S. Skafidas, T. Nirmalathas, M. Asaduzzaman","doi":"10.1109/IBP.2015.7230764","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230764","url":null,"abstract":"Change in refractive index and corresponding change in optical properties like propagation loss, group index and dispersion in active PIN silicon waveguide with and without photonic crystal core are investigated by changing doping concentration. This investigation sets a bound on doping density which is utilized to change effective refractive index for various applications like modulation, switching, dispersion compensation, slowing light and so on. Influences of depleting carriers on junction capacitance and reverse current behaviors are also investigated for same waveguides. This sets a benchmark for the design and selection of appropriate waveguide for various applications in silicon photonics platform.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125127939","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}
引用次数: 0
Variable optical attenuator employing a dye-doped (polymer/liquid crystal) composite film 采用染料掺杂(聚合物/液晶)复合薄膜的可变光学衰减器
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230756
K. Ariki, S. Fukushima, T. Hachino, Y. Igarashi, H. Higuchi, H. Kikuchi
{"title":"Variable optical attenuator employing a dye-doped (polymer/liquid crystal) composite film","authors":"K. Ariki, S. Fukushima, T. Hachino, Y. Igarashi, H. Higuchi, H. Kikuchi","doi":"10.1109/IBP.2015.7230756","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230756","url":null,"abstract":"To clarify extinction mechanism of a dye-doped (polymer/liquid crystal) composite film variable optical attenuator, we evaluated its scattering intensity dependencies on the wavelength and scattering angle. We have obtained some experimental data that suggest Rayleigh scattering is a primary mechanism of extinction.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125668175","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}
引用次数: 0
Mode crosstalk evaluation on optical mode switch 光模式开关的模式串扰评价
2015 IEEE International Broadband and Photonics Conference (IBP) Pub Date : 2015-04-23 DOI: 10.1109/IBP.2015.7230770
Ryan Imansyah, Tatsushi Tanaka, Luke Himbele, Haisong Jiang, K. Hamamoto
{"title":"Mode crosstalk evaluation on optical mode switch","authors":"Ryan Imansyah, Tatsushi Tanaka, Luke Himbele, Haisong Jiang, K. Hamamoto","doi":"10.1109/IBP.2015.7230770","DOIUrl":"https://doi.org/10.1109/IBP.2015.7230770","url":null,"abstract":"We show the mode crosstalk between the fundamental mode and the 1st order mode based on the optical mode switch to investigate the performance experimentally for the first time. In order to evaluate the mode crosstalk, we fabricated and integrated multimode interference (MMI) mode filter with the optical mode switch. The crosstalk of approximately -10 dB between modes has been evaluated by using this mode filter.","PeriodicalId":236981,"journal":{"name":"2015 IEEE International Broadband and Photonics Conference (IBP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128175926","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}
引用次数: 5
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