Pub Date : 2009-12-01DOI: 10.1109/LEOS.2009.5343406
S. Hoffmann, M. El-Darawy, T. Pfau, C. Wordehoff, R. Peveling, U. Ruckert, R. Noé
A multiplier-free phase estimation algorithm for coherent QPSK detection is presented. The barycenter approach is modified by a selectivity mechanism that improves performance. In addition to recently published measurement results, theoretical derivations and simulation results are provided.
{"title":"Realtime phase tracking with multiplier-free barycenter approximation in digital synchronous QPSK receiver for coherent detection","authors":"S. Hoffmann, M. El-Darawy, T. Pfau, C. Wordehoff, R. Peveling, U. Ruckert, R. Noé","doi":"10.1109/LEOS.2009.5343406","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343406","url":null,"abstract":"A multiplier-free phase estimation algorithm for coherent QPSK detection is presented. The barycenter approach is modified by a selectivity mechanism that improves performance. In addition to recently published measurement results, theoretical derivations and simulation results are provided.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115630296","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343196
B. Oktem, H. Kalaycıoğlu, F. Ilday
We report a robust, all-fiber amplifier seeded by a fiber oscillator. Seed pulses at 1 MHz repetition rate are amplified up to 3 muJ, delivering 1 muJ-energy, 170 fs-long pulses. Duration reduces to 120 fs at 1 muJ amplifier output. These are the highest peak powers from an integrated fiber source.
{"title":"All-fiber high-energy yb-doped fiber amplifier","authors":"B. Oktem, H. Kalaycıoğlu, F. Ilday","doi":"10.1109/LEOS.2009.5343196","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343196","url":null,"abstract":"We report a robust, all-fiber amplifier seeded by a fiber oscillator. Seed pulses at 1 MHz repetition rate are amplified up to 3 muJ, delivering 1 muJ-energy, 170 fs-long pulses. Duration reduces to 120 fs at 1 muJ amplifier output. These are the highest peak powers from an integrated fiber source.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115701707","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343367
L. O’Faolain, T. Krauss
We demonstrate Third Harmonic Generation and tunable delays in dispersion engineered slow light photonic crystal waveguides.
我们展示了色散工程慢光光子晶体波导中的三次谐波产生和可调延迟。
{"title":"Dispersion engineered photonic crystal waveguides for linear and non-linear applications","authors":"L. O’Faolain, T. Krauss","doi":"10.1109/LEOS.2009.5343367","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343367","url":null,"abstract":"We demonstrate Third Harmonic Generation and tunable delays in dispersion engineered slow light photonic crystal waveguides.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114379365","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343295
J. McKendry, B. Rae, Z. Gong, B. Guilhabert, D. Massoubre, E. Gu, D. Renshaw, R. Henderson, M. Dawson
We report the characterization of micro-pixellated III-nitride LED arrays giving maximum output per pixel of 5 mW in continuous mode and 500 pJ per 25 ns pulse. These have been integrated with custom CMOS control electronics.
{"title":"Individually-addressable III-nitride micro-LED arrays for integrated CMOS control","authors":"J. McKendry, B. Rae, Z. Gong, B. Guilhabert, D. Massoubre, E. Gu, D. Renshaw, R. Henderson, M. Dawson","doi":"10.1109/LEOS.2009.5343295","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343295","url":null,"abstract":"We report the characterization of micro-pixellated III-nitride LED arrays giving maximum output per pixel of 5 mW in continuous mode and 500 pJ per 25 ns pulse. These have been integrated with custom CMOS control electronics.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116582248","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343184
A. Yalçın, M. Cretich, G. di Carlo, L. Sola, M. Monroe, M. Selim Unlu, M. Chiari
In this study, we report on the utilization of layered substrates for increased performance of fluorescent-based detection schemes. Through optimization of layer thicknesses, we demonstrate that enhancement with respect to commonly used microscope slides is achieved for the collected fluorescence signal.
{"title":"Fluorescence enhancement on reflecting substrates for microarray applications","authors":"A. Yalçın, M. Cretich, G. di Carlo, L. Sola, M. Monroe, M. Selim Unlu, M. Chiari","doi":"10.1109/LEOS.2009.5343184","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343184","url":null,"abstract":"In this study, we report on the utilization of layered substrates for increased performance of fluorescent-based detection schemes. Through optimization of layer thicknesses, we demonstrate that enhancement with respect to commonly used microscope slides is achieved for the collected fluorescence signal.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116747518","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}
E. D'Asaro, S. Heidari-Bateni, A. Pasquazi, G. Assanto, J. Gonzalo, J. Solís, C. Afonso
We investigate the interaction of two coherent 2D+1 solitary beams versus phase in a high index glass.
我们研究了高折射率玻璃中两个相干2D+1孤立光束与相位的相互作用。
{"title":"Interacting solitons in a high index glass","authors":"E. D'Asaro, S. Heidari-Bateni, A. Pasquazi, G. Assanto, J. Gonzalo, J. Solís, C. Afonso","doi":"10.1364/QELS.2010.QTUC6","DOIUrl":"https://doi.org/10.1364/QELS.2010.QTUC6","url":null,"abstract":"We investigate the interaction of two coherent 2D+1 solitary beams versus phase in a high index glass.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115800702","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343368
M. E. M. Pasandi, D. Plant
We study the performance of an adaptive weighted channel equalizer for direct-detection dispersion-compensated OFDM transmission system and show that it improves the BER and reduces the overhead and sensitivity to the optical channel variations.
{"title":"OFDM data-aided channel equalizer for already-deployed optical direct-detection transmission systems","authors":"M. E. M. Pasandi, D. Plant","doi":"10.1109/LEOS.2009.5343368","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343368","url":null,"abstract":"We study the performance of an adaptive weighted channel equalizer for direct-detection dispersion-compensated OFDM transmission system and show that it improves the BER and reduces the overhead and sensitivity to the optical channel variations.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115458909","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343352
A. Khayat Jafari, S. Toroghi, A. Golpayegani
Here, we have used the temperature-dependant form of the Boltzmann occupation factors, absorption and stimulated cross sections, and thermal conductivity of the Yb:YAG crystal for a more accurate consideration of various operating variables important for a typical thin-disk laser. A Monte Carlo ray tracing based code and 2D finite element analysis (FEA) with the ANSYS package have been used to calculate the absorption power and temperature distribution inside the crystal, respectively. Then, according to derived equations from a set of coupled rate equations, we have modeled the laser output power.
{"title":"Simulation of performance of end-pumped Yb:YAG thin disk lasers","authors":"A. Khayat Jafari, S. Toroghi, A. Golpayegani","doi":"10.1109/LEOS.2009.5343352","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343352","url":null,"abstract":"Here, we have used the temperature-dependant form of the Boltzmann occupation factors, absorption and stimulated cross sections, and thermal conductivity of the Yb:YAG crystal for a more accurate consideration of various operating variables important for a typical thin-disk laser. A Monte Carlo ray tracing based code and 2D finite element analysis (FEA) with the ANSYS package have been used to calculate the absorption power and temperature distribution inside the crystal, respectively. Then, according to derived equations from a set of coupled rate equations, we have modeled the laser output power.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115595884","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343188
C. Simonneau, J. Antona, D. Chiaroni
This paper describes a packet-optical add/drop multiplexer technology designed for Metro-ring networks to reduce cost and power consumption with a network efficiency comparable to a full-electronic Ethernet solution. A demonstrator including three nodes is shown.
{"title":"Packet-optical Add/Drop multiplexer technology: A pragmatic way to introduce optical packet switching in the next generation of metro networks","authors":"C. Simonneau, J. Antona, D. Chiaroni","doi":"10.1109/LEOS.2009.5343188","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343188","url":null,"abstract":"This paper describes a packet-optical add/drop multiplexer technology designed for Metro-ring networks to reduce cost and power consumption with a network efficiency comparable to a full-electronic Ethernet solution. A demonstrator including three nodes is shown.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123555156","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 : 2009-12-01DOI: 10.1109/LEOS.2009.5343354
F. Fusari, A. Lagatsky, G. Jose, Xin Jiang, A. Jha, W. Sibbett, C. Brown
In this report we have presented a spectroscopic and CW laser characterization of an efficient thulium doped GPNG bulk germanate glass pumped at 792 nm by Ti: Sapphire radiation. Laser characterization gave a maximum slope efficiency of 50 % comparable to the crystalline counterparts and we believe, to the best of our knowledge, this being the best for Tm-doped bulk glass lasers. The maximum output power was of 190 mW with a 4 % OC for -500 mW of absorbed power. In this report we can confirm that Germanate glass proved a good host for 2 mum Tnr+ lasers as suggested by G. Turri et al.[9]. Given that Germanate materials possess nonlinear refractive indexes around ~ 40 x 10"16 cm2/W [10] (approximately one order of magnitude higher that the ~ 3 x 10"16 cm2/W of the Ti:Sapphire[ll]) yielding pronounced Kerr lens susceptibilities, when combined with their broad tunability further suggests that they have good potential for ultrashort pulse operation.
在这个报告中，我们提出了一个光谱和连续激光表征的高效掺铥GPNG块状锗酸玻璃泵浦在792 nm的钛:蓝宝石辐射。激光表征给出了与晶体相媲美的50%的最大斜率效率，我们相信，据我们所知，这是掺铥块状玻璃激光器的最佳斜率效率。最大输出功率为190兆瓦，温度为4%，吸收功率为-500兆瓦。在本报告中，我们可以证实锗酸盐玻璃证明了G. Turri等人[9]提出的2 mum Tnr+激光器的良好宿主。鉴于Germanate材料具有约~ 40 x 10“16 cm2/W的非线性折射率[10](大约比Ti:Sapphire的~ 3 x 10”16 cm2/W高一个数量级[11])，产生明显的Kerr透镜敏感性，当结合其广泛的可调性时，进一步表明它们具有超短脉冲操作的良好潜力。
{"title":"Laser operation of a bulk Tm3+: Germanate glass laser around 2 µm with 50 % internal slope efficiency","authors":"F. Fusari, A. Lagatsky, G. Jose, Xin Jiang, A. Jha, W. Sibbett, C. Brown","doi":"10.1109/LEOS.2009.5343354","DOIUrl":"https://doi.org/10.1109/LEOS.2009.5343354","url":null,"abstract":"In this report we have presented a spectroscopic and CW laser characterization of an efficient thulium doped GPNG bulk germanate glass pumped at 792 nm by Ti: Sapphire radiation. Laser characterization gave a maximum slope efficiency of 50 % comparable to the crystalline counterparts and we believe, to the best of our knowledge, this being the best for Tm-doped bulk glass lasers. The maximum output power was of 190 mW with a 4 % OC for -500 mW of absorbed power. In this report we can confirm that Germanate glass proved a good host for 2 mum Tnr+ lasers as suggested by G. Turri et al.[9]. Given that Germanate materials possess nonlinear refractive indexes around ~ 40 x 10\"16 cm2/W [10] (approximately one order of magnitude higher that the ~ 3 x 10\"16 cm2/W of the Ti:Sapphire[ll]) yielding pronounced Kerr lens susceptibilities, when combined with their broad tunability further suggests that they have good potential for ultrashort pulse operation.","PeriodicalId":269220,"journal":{"name":"2009 IEEE LEOS Annual Meeting Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124932647","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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