CLEO: QELS-Fundamental Science Tuesday, 11 June

Meeting Room211D-BMeeting Room212A-CMeeting Room212D-BMarriott San JoseSalon I & IICLEO: Science& InnovationsCTu3I • PrecisionSpectroscopy—ContinuedCTu3J • Novel Pulse Generationand Synthesis—ContinuedCTu3K • Structured Fibers andStructured Light—ContinuedCTu3L • Nanophotonics inOptical Communications—ContinuedCTu3I.4 • 17:15Using a Multimode Fiber as a High-resolution,Low-loss Spectrometer, Brandon Redding 1 ,Sebastien Popoff 1 , Hui Cao 1 ; 1 Applied Physics,Yale University, USA. We demonstrate that amulti-mode fiber can operate as a high-resolutionspectrometer after calibrating the wavelengthdependentspeckle patterns. A 20m fiber provides8pm resolution and a 2cm fiber enables broadbandoperation covering the visible spectrum.CTu3J.4 • 17:15Linear time-lens techniques based on intensitymodulation, Bo Li 1,2 , Ming Li 1 , Shuqin Lou 2 , JoseAzana 1 ; 1 Institut National de la Recherche Scientifique- Energie, Matériaux et Télécommunications(INRS-EMT), Canada; 2 School of Electronic and InformationEngineering, Beijing Jiaotong University,China. We propose alternative optical time-lenstechniques, namely temporal zone plates, based onintensity modulation, instead of the conventionalphase modulation processes. An experimentaltime-bandwidth product > 31 is achieved in linearoptical pulse compression experiments.Join the conversation.Follow @cleoconf on Twitter.Use hashtag #CLEO13.Tuesday, 11 JuneCTu3I.5 • 17:30High-Precision Measurement of the Ground-State Hyperfine Splitting of 113Cd+ Ions foran Atomic Clock, Jianwei Zhang 1,2 , ShiguangWang 1,3 , Kai Miao 1,2 , Zhengbo Wang 1,2 , HongboXue 1,2 , Yanying Feng 1,2 , Lijun Wang 2,3 ; 1 NIM-THUJoint Institute for Measurement Science (JMI), TsinghuaUniversity, China; 2 Department of PrecisionInstruments and Mechanology, Tsinghua University,China; 3 Department of Physics, Tsinghua University,China. We report a high-precision measurementof the ground-state hyperfine splitting of 113Cd+ions. This result is vital for an atomic clock basedon the cadmium ions to estimate the frequencyuncertainty.CTu3I.6 • 17:45Improved Absolute Frequency Measurementof the 171Yb Optical Lattice Clock towards theRedefinition of the Second, Masami Yasuda 1 ,Hajime Inaba 1 , Takuya Kohno 1 , Takehiko Tanabe 1 ,Yoshiaki Nakajima 1 , Kazumoto Hosaka 1 , DaisukeAkamatsu 1 , Atsushi Onae 1 , Tomonari Suzuyama 1 ,Masaki Amemiya 1 , Feng Lei Hong 1 ; 1 NationalMetrology Institute of Japan, National Institute ofAdvanced Industrial Science and Technology, Japan.We demonstrate an improved absolute frequencymeasurement of the 1S0-3P0 clock transition at578 nm in 171Yb atoms in a one-dimensionaloptical lattice. The absolute frequency is determinedas 518 295 836 590 863.1(2.0) Hz relativeto the SI second.CTu3J.5 • 17:30A Scheme Allowing Synthesis and Characterizationof Ultrafast Waveforms Using CoherentRaman Sidebands, Kai Wang 1 , Miaochan Zhi 1 ,Xia Hua 1 , Alexei Sokolov 1 ; 1 Texas A&M University,USA. We propose a new scheme whichallows synthesis and characterization of ultrafastwaveforms using coherent Raman sidebands. Weshow that a deformable mirror may be used forfine phase adjustment.CTu3J.6 • 17:45Construction of a beat-wave pulse train forquasi-phase-matched high-harmonic generation,Chi-Hsiang Yang 1 , Shih-Chi Kao 1 , JyhpyngWang 2,3 , Hsu-hsin Chu 1 ; 1 Department of Physics,National Central University, Taiwan; 2 Institute ofAtomic and Molecular Sciences, Academia Sinica,Taiwan; 3 Department of Physics, National TaiwanUniversity, Taiwan. A beat-wave pulse trainwith 66-fs pulse separation is generated from atwo-color Ti:sapphire amplifier system. It can beused for quasi-phase-matched high-harmonicgeneration at 3-nm wavelength under 1.0×10 18cm −3 plasma density.CTu3K.4 • 17:30Fiber Mode Excitation via Free-Space BeamShaping, Yuhao Chen 1 , Patrick Gregg 1 , SiddharthRamachandran 1 ; 1 Boston University, USA. Wedemonstrate a free space method to generatehigher order Bessel-like (LP0m) modes in a fiberusing a spatial light modulator. Our methodenables precise mode control implementing thecorresponding phase plate designs on the SLM.CTu3K.5 • 17:45Minimising group index variations in a multicoreendoscope fibre, James C. Roper 1 , StephanosYerolatsitis 1 , Tim A. Birks 1 , Brian J. Mangan 1 ,Christopher Dunsby 2 , Paul M. French 2 , JonathanC. Knight 1 ; 1 Physics, University of Bath, UnitedKingdom; 2 Physics, Imperial College London, UnitedKingdom. We describe a multicore endoscopefibre with minimised group index variation betweencores that is obtained at a V parameter of3. Tapering the fibre input enables us to achievesingle-mode propagation.CTu3L.2 • 17:30Performance of Self-Seeded RSOAs in WDM-PONs, Fei Xiong 1 , Wen-De Zhong 1 ; 1 School ofElectrical and Electronic Engineering, NanyangTechnological University, Singapore. We present adetailed performance investigation of self-seededRSOAs in WDM-PONs. The influences of severalsystem parameters on the transmission performanceare examined, including signal extinctionratio, stable seeding power, and features of thewavelength multiplexer.CTu3L.3 • 17:4525 Gb/s Transmission over 1-km OM4 MultimodeFiber Using a Single Mode PhotonicCrystal VCSEL, Meng Peun Tan 1 , James A. Lott 2 ,Stewart T. Fryslie 1 , Nikolay N. Ledentsov 3 , DieterBimberg 2 , Kent D. Choquette 1 ; 1 Department ofElectrical and Computer Engineering, Universityof Illinois Urbana-Champaign, USA; 2 Institut fürFestkörperphysik und Zentrum für Nanophotonik,Technische Universität Berlin, Germany; 3 VI SystemsGmbH, Germany. With reduced chromaticdispersion, a single mode photonic crystal verticalcavity surface emitting laser operating at a lowcurrent density of 5.4 kA/cm 2 enables error-freetransmission over 1-km OM4 multimode fiberat 25 Gb/s.CTu3J.7 • 18:00Breaking the energy-bandwidth limit of electroopticmodulators: theory and a device proposal,Juejun Hu 1 , Hongtao Lin 1 , Okechukwu Ogbuu 1 ,Jifeng Liu 3 , Lin Zhang 2 , Jurgen Michel 2 ; 1 Universityof Delaware, USA; 2 Massachusetts Institute ofTechnology, USA; 3 Dartmouth College, USA. Weanalytically derive the energy-bandwidth limit forelectro-optic modulators based on intra-cavity indexmodulation, and propose a dual cavity modulatorusing coupling modulation to simultaneouslyachieve high bandwidth (80 GHz) and ultra-lowenergy-per-bit (0.26 aJ).CTu3K.6 • 18:00Micro-confinement of microwave-plasma inphotonic structures, Benoît DEBORD 1 , FrédéricGérôme 1 , Raphaël Jamier 1 , Luis Lemos Alves 2 ,Olivier Leroy 3 , Caroline Boisse-Laporte 3 , PhilippeLeprince 3 , Fetah Benabid 1 ; 1 GPPMM group, XlimResearch Institute, France; 2 Instituto de Plasmas eFusão Nuclear, Universidade Técnica de Lisboa,Portugal; 3 Laboratoire de physique des gaz et desplasmas (LPGP), France. We review on our previousexperimental results on microwave microplasmasignition in hollow-core photonic crystalfibers and elucidate on how such a plasma can beconfined in the hollow-core without damagingthe host structure.CTu3L.4 • 18:00 Invited119 fJ of Dissipated Energy per Bit for Errorfree40 Gbit/s Transmission Across 50 m ofMultimode Optical Fiber Using Energy Efficient850 nm VCSELs, Philip Wolf 1 , Philip Moser 1 ,Gunter Larisch 1 , Hui Li 1 , James A. Lott 1 , DieterBimberg 1,2 ; 1 Institute of Solid State Physics andCenter of NanoPhotonics, Technische UniversitätBerlin, Germany; 2 King Abdulaziz University, SaudiArabia. Error-free transmission at 40, 36, and 30Gbit/s across 50, 200, and 400 m, respectivelyof multimode fiber is achieved with energy dissipationof 119, 128 and 127 fJ/bit using 850 nmvertical-cavity surface-emitting lasers.122 CLEO: 2013 • 9–14 June 20132013CLEO Tuesday.indd 315/17/13 3:11 PM