The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Yandong Gong - One of the best experts on this subject based on the ideXlab platform.
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Fabrication of all-solid photonic bandgap fiber coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap fiber coupler based on the side-polishing technique. This device is believed to be the first demonstRation of a photonic bandgap fiber coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously controlled.
Bernd Rumberg - One of the best experts on this subject based on the ideXlab platform.
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the h atp Coupling Ratio of the atp synthase from thiol modulated chloroplasts and two cyanobacterial strains is four
FEBS Letters, 1996Co-Authors: Hendrika S. Van Walraven, Heinrich Strotmann, Oliver Schwarz, Bernd RumbergAbstract:Abstract In this paper the authors emphasise that the proton translocating ATP synthase from thiol-modulated chloroplasts and two cyanobacterial strains has a Coupling Ratio of 4 protons per ATP synthesised or hydrolysed. This Ratio is determined by several thermodynamic studies at equilibrium between phosphate potential (ΔGp) and proton gradient ( Δ μ H + ), and is confirmed by measurement of proton flux during ATP hydrolysis. Ratios lower than 4 H+/ATP that have been published in the past have predominantly been determined with the oxidised chloroplast enzyme. Errors in these measurements will be discussed.
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THE H+/ATP Coupling Ratio OF THE ATP SYNTHASE FROM THIOL-MODULATED CHLOROPLASTS AND TWO CYANOBACTERIAL STRAINS IS FOUR
FEBS letters, 1996Co-Authors: Hendrika S. Van Walraven, Heinrich Strotmann, Oliver Schwarz, Bernd RumbergAbstract:Abstract In this paper the authors emphasise that the proton translocating ATP synthase from thiol-modulated chloroplasts and two cyanobacterial strains has a Coupling Ratio of 4 protons per ATP synthesised or hydrolysed. This Ratio is determined by several thermodynamic studies at equilibrium between phosphate potential (ΔGp) and proton gradient ( Δ μ H + ), and is confirmed by measurement of proton flux during ATP hydrolysis. Ratios lower than 4 H+/ATP that have been published in the past have predominantly been determined with the oxidised chloroplast enzyme. Errors in these measurements will be discussed.
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H+/ATP Coupling Ratio at the unmodulated CF0CF1-ATP synthase determined by proton flux measurements
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1996Co-Authors: Stephan Berry, Bernd RumbergAbstract:Abstract The H + /ATP Coupling Ratio is determined kinetically by comparing ATP synthesis and proton flow across the ATP synthase in spinach thylakoids under conditions of continuous illumination. Net proton flow at steady-state is zero, therefore the initial efflux in the dark is taken. A new method of kinetic analysis of the relaxation of the transmembrane proton gradient is presented, allowing direct determination of phosphorylating and basal proton fluxes at the same time. Special care is taken for the influence of dark phosphorylation and the H + diffusion potential. The investigations give evidence of a H + /ATP Coupling Ratio of four for the oxidized or unmodulated state of the ATP synthase being at par with the Coupling Ratio for the reduced or modulated state of the enzyme.
Ping Shum - One of the best experts on this subject based on the ideXlab platform.
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Experimental investigation of tunable all-solid photonic bandgap fiber coupler
Proceedings of SPIE, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia YuAbstract:The fabrication of a tunable all-solid photonic bandgap fiber coupler based on side-polishing technique is reported. The all-solid photonic bandgap fiber is set into a silica block and then polished to access the evanescent field. The photonic bandgap fiber coupler was assembled by mating two identical half-blocks with each other. By longitudinally adjusting the relative position between the mated pair, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously tuned.
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Fabrication of all-solid photonic bandgap fiber coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap fiber coupler based on the side-polishing technique. This device is believed to be the first demonstRation of a photonic bandgap fiber coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously controlled.
Xia Yu - One of the best experts on this subject based on the ideXlab platform.
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Experimental investigation of tunable all-solid photonic bandgap fiber coupler
Proceedings of SPIE, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia YuAbstract:The fabrication of a tunable all-solid photonic bandgap fiber coupler based on side-polishing technique is reported. The all-solid photonic bandgap fiber is set into a silica block and then polished to access the evanescent field. The photonic bandgap fiber coupler was assembled by mating two identical half-blocks with each other. By longitudinally adjusting the relative position between the mated pair, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously tuned.
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Fabrication of all-solid photonic bandgap fiber coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap fiber coupler based on the side-polishing technique. This device is believed to be the first demonstRation of a photonic bandgap fiber coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously controlled.
Juanjuan Hu - One of the best experts on this subject based on the ideXlab platform.
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Experimental investigation of tunable all-solid photonic bandgap fiber coupler
Proceedings of SPIE, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia YuAbstract:The fabrication of a tunable all-solid photonic bandgap fiber coupler based on side-polishing technique is reported. The all-solid photonic bandgap fiber is set into a silica block and then polished to access the evanescent field. The photonic bandgap fiber coupler was assembled by mating two identical half-blocks with each other. By longitudinally adjusting the relative position between the mated pair, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously tuned.
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Fabrication of all-solid photonic bandgap fiber coupler
Optics Letters, 2007Co-Authors: Ping Shum, Juanjuan Hu, Xia Yu, Yandong GongAbstract:We report the fabrication of a tunable all-solid photonic bandgap fiber coupler based on the side-polishing technique. This device is believed to be the first demonstRation of a photonic bandgap fiber coupler to eliminate the contamination of the open air holes. By adjusting the length of the interaction section, the tunable Coupling Ratio as much as 92.5% at 1550 nm is achieved. The investigation of the spectrum properties shows that the coupler has excellent tunability properties, for which the Coupling Ratio can be smoothly and continuously controlled.
