Pub Date : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519176
T. Iredale, M. Pelusi, B. Eggleton
We present a novel principle for all-optical monitoring of optical signal-to-noise ratio (OSNR) that exploits the effect of in-band noise on stimulated Brillouin scattering (SBS). It shown for NRZ signals it can resolve OSNRs above 40 dB.
{"title":"Highly-sensitive all-optical in-band OSNR monitor using stimulated Brillouin scattering","authors":"T. Iredale, M. Pelusi, B. Eggleton","doi":"10.1109/COINACOFT.2007.4519176","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519176","url":null,"abstract":"We present a novel principle for all-optical monitoring of optical signal-to-noise ratio (OSNR) that exploits the effect of in-band noise on stimulated Brillouin scattering (SBS). It shown for NRZ signals it can resolve OSNRs above 40 dB.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"157 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77744806","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519160
J. Bolger, D. Yeom, G. Marshall, D. Austin, B. Kuhlmey, M. Withford, C. D. de Sterke, B. Eggleton
We demonstrate tunable spectral enhancement of supercontinuum with a long-period grating. The spectral loss of the grating evolves into a peak whose position can be tuned by varying the temperature or the ambient index around the grating.
{"title":"Tunable spectral enhancement of supercontinuum with long-period gratings","authors":"J. Bolger, D. Yeom, G. Marshall, D. Austin, B. Kuhlmey, M. Withford, C. D. de Sterke, B. Eggleton","doi":"10.1109/COINACOFT.2007.4519160","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519160","url":null,"abstract":"We demonstrate tunable spectral enhancement of supercontinuum with a long-period grating. The spectral loss of the grating evolves into a peak whose position can be tuned by varying the temperature or the ambient index around the grating.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"35 2 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77673516","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519110
N. Sarkhosh, H. Emami, L. Bui, T. Nguyen, A. Mitchell
A technique to implement frequency measurement photonically using only low-cost DC photodetectors is proposed and a proof of concept implementation is practically demonstrated. Techniques to further reduce cost and extend bandwidth are proposed.
{"title":"Low-cost RF Frequency Measurement using Photonic Approach","authors":"N. Sarkhosh, H. Emami, L. Bui, T. Nguyen, A. Mitchell","doi":"10.1109/COINACOFT.2007.4519110","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519110","url":null,"abstract":"A technique to implement frequency measurement photonically using only low-cost DC photodetectors is proposed and a proof of concept implementation is practically demonstrated. Techniques to further reduce cost and extend bandwidth are proposed.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"318 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80166438","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519113
C. Poh, Seung-Ryeol Lee, Yong-Tak Lee, K. Alameh
A 1300nm electronically-tunable laser structure employing an Opto-VLSI processor and a semiconductor optical amplifier is demonstrated. Wavelength tuning is realized by reconfiguring the holographic diffraction grating of an Opto- VLSI processor, allowing specific wavelengths to lase through the semiconductor optical amplifier. A tuning range of 5.7 nm is experimentally demonstrated.
{"title":"Demonstration of Electronically-Tunable Laser Structure Employing a Semiconductor Optical Amplifier and an Opto-VLSI Processor","authors":"C. Poh, Seung-Ryeol Lee, Yong-Tak Lee, K. Alameh","doi":"10.1109/COINACOFT.2007.4519113","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519113","url":null,"abstract":"A 1300nm electronically-tunable laser structure employing an Opto-VLSI processor and a semiconductor optical amplifier is demonstrated. Wavelength tuning is realized by reconfiguring the holographic diffraction grating of an Opto- VLSI processor, allowing specific wavelengths to lase through the semiconductor optical amplifier. A tuning range of 5.7 nm is experimentally demonstrated.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"76 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88968322","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519172
Seungjin Lee, Namuk Kim, Tae-Yeon Kim, Minho Kang
In this paper, we discuss the architecture of WDM/TDM hybrid PON based on TLD. Also we address how to guarantee the fairness with high utilization of upstream data transmission between ONUs in reservation based architecture.
{"title":"Fairness of reservation based bandwidth allocation in WDM/TDM-PON","authors":"Seungjin Lee, Namuk Kim, Tae-Yeon Kim, Minho Kang","doi":"10.1109/COINACOFT.2007.4519172","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519172","url":null,"abstract":"In this paper, we discuss the architecture of WDM/TDM hybrid PON based on TLD. Also we address how to guarantee the fairness with high utilization of upstream data transmission between ONUs in reservation based architecture.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"57 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89837075","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519171
M. Åslund, S. Jackson
We introduce a method that alters the operating wavelength of a laser transition by using long period fibre gratings which couple from the core into an effective continuum of cladding modes. We shift the operating wavelength of an Nd3+- doped aluminosilicate fibre laser from 1057 nm to 1088 nm which represents dominant lasing from Nd3+ ions in Al3+ deficient sites.
{"title":"Long period gratings for wavelength specific loss in a fibre laser","authors":"M. Åslund, S. Jackson","doi":"10.1109/COINACOFT.2007.4519171","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519171","url":null,"abstract":"We introduce a method that alters the operating wavelength of a laser transition by using long period fibre gratings which couple from the core into an effective continuum of cladding modes. We shift the operating wavelength of an Nd3+- doped aluminosilicate fibre laser from 1057 nm to 1088 nm which represents dominant lasing from Nd3+ ions in Al3+ deficient sites.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"96 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82711405","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519170
Bokrae Jung, Minho Kang
WDM/Ethernet-PON based on gain-saturated RSOA is proposed and verify extending splitting ratios employing time division duplex (TDD) shared MAC frame scheme. From the simulation results we expect great increase of subscribers at the expense of slight performance degradation.
{"title":"A Novel MAC Frame Scheme for Extending Capable Subscribers in WDM/Ethernet-PON","authors":"Bokrae Jung, Minho Kang","doi":"10.1109/COINACOFT.2007.4519170","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519170","url":null,"abstract":"WDM/Ethernet-PON based on gain-saturated RSOA is proposed and verify extending splitting ratios employing time division duplex (TDD) shared MAC frame scheme. From the simulation results we expect great increase of subscribers at the expense of slight performance degradation.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"AES-11 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84528693","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519090
Y. T. Lee, K. Chang, Y. Song, K. Alameh
In this presentation, we propose novel techniques that improve the performance and the reliability of monolithically integrated VCSELs and RCEPDs , namely, (i) an approach based on forming a self-aligned microlens onto the top distributed Bragg reflectors (DBRs) of VCSEL elements without any additional lithography and (ii) a method that enables tuning the cavity mode of RCEPDs for wavelength alignment. In addition, we propose and demonstrate the proof-of-concept of a reconfigurable inter-chip optical interconnect structure employing Opto-VLSI processors. The performance of the structure is evaluated by measuring the output signals and eye diagrams for different point-to-point and point-to-multipoint optical interconnect scenarios.
{"title":"Alignment tolerant bi-directional optical interconnects using microlens integrated VCSEL/RCEPD arrays","authors":"Y. T. Lee, K. Chang, Y. Song, K. Alameh","doi":"10.1109/COINACOFT.2007.4519090","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519090","url":null,"abstract":"In this presentation, we propose novel techniques that improve the performance and the reliability of monolithically integrated VCSELs and RCEPDs , namely, (i) an approach based on forming a self-aligned microlens onto the top distributed Bragg reflectors (DBRs) of VCSEL elements without any additional lithography and (ii) a method that enables tuning the cavity mode of RCEPDs for wavelength alignment. In addition, we propose and demonstrate the proof-of-concept of a reconfigurable inter-chip optical interconnect structure employing Opto-VLSI processors. The performance of the structure is evaluated by measuring the output signals and eye diagrams for different point-to-point and point-to-multipoint optical interconnect scenarios.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"7 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87679134","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519136
T. T. Le, L. Cahill
A new optical switch based on microring resonators (MRs) is proposed in this paper. By using the thermo-optic effect or electro-optic effect, the switching can be easily obtained at a very low switching power. The design, analysis and performance considerations of the proposed switch are given in detail.
{"title":"A Novel Proposal for Low Power Optical Switches Based on Microring Resonators","authors":"T. T. Le, L. Cahill","doi":"10.1109/COINACOFT.2007.4519136","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519136","url":null,"abstract":"A new optical switch based on microring resonators (MRs) is proposed in this paper. By using the thermo-optic effect or electro-optic effect, the switching can be easily obtained at a very low switching power. The design, analysis and performance considerations of the proposed switch are given in detail.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"102 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75882577","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 : 2007-06-24DOI: 10.1109/COINACOFT.2007.4519109
S. Law, S. Fleming, D. Mckenzie, N. Suchowerska, J. Lambert, Y. Yin
The intensity of Cerenkov radiation transmitted along a step index, a graded index and an air core polymer optical fiber are compared. It is demonstrated that air core fibers are free from background Cerenkov signal.
{"title":"Large Core Fibers for Short-Distance Communication in Radiation Fields","authors":"S. Law, S. Fleming, D. Mckenzie, N. Suchowerska, J. Lambert, Y. Yin","doi":"10.1109/COINACOFT.2007.4519109","DOIUrl":"https://doi.org/10.1109/COINACOFT.2007.4519109","url":null,"abstract":"The intensity of Cerenkov radiation transmitted along a step index, a graded index and an air core polymer optical fiber are compared. It is demonstrated that air core fibers are free from background Cerenkov signal.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"19 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85039260","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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