- Design for broadband high-efficiency grating couplers
[作者：Xiao, Z; Luan, F; Liow, TY; Zhang, J; Shum, P,期刊：OPTICS LETTERS, 页码：530-532 , 文章类型： Article，,卷期：2012年37-4]
- In this Letter, we propose general optimization methods to design broadband high-efficiency grating couplers for planar waveguides. We attribute the coupling bandwidth to the mismatch of effective indices between the dif...
- Negative coupling between defects in waveguide arrays
[作者：Zeuner, JM; Rechtsman, MC; Keil, R; Dreisow, F; Tunnermann, A; Nolte, S; Szameit, A,期刊：OPTICS LETTERS, 页码：533-535 , 文章类型： Article，,卷期：2012年37-4]
- We report on the experimental demonstration of negative coupling constants between defect guides in a waveguide lattice. We find that coupling can only be negative if the defects are negative and an odd number of lattice...
- Integrated TiO2 resonators for visible photonics
[作者：Choy, JT; Bradley, JDB; Deotare, PB; Burgess, IB; Evans, CC; Mazur, E; Loncar, M,期刊：OPTICS LETTERS, 页码：539-541 , 文章类型： Article，,卷期：2012年37-4]
- We demonstrate waveguide-coupled titanium dioxide (TiO2) racetrack resonators with loaded quality factors of 2.2 x 10(4) for the visible wavelengths. The structures were fabricated in sputtered TiO2 thin films on oxidize...
- Surface plasmon polariton compression through radially and linearly polarized source
[作者：Zaccaria, RP; De Angelis, F; Toma, A; Razzari, L; Alabastri, A; Das, G; Liberale, C; Di Fabrizio, E,期刊：OPTICS LETTERS, 页码：545-547 , 文章类型： Article，,卷期：2012年37-4]
- We report on the possibility of realizing a radial mode on a metallic conical structure by means of a linearly polarized incident wave. This result is utilized for observing surface plasmon polaritons adiabatic compressi...
- UWB monocycle pulse generation using two-photon absorption in a silicon waveguide
[作者：Yue, Y; Huang, H; Zhang, L; Wang, J; Yang, JY; Yilmaz, OF; Levy, JS; Lipson, M; Willner, AE,期刊：OPTICS LETTERS, 页码：551-553 , 文章类型： Article，,卷期：2012年37-4]
- We propose and experimentally demonstrate ultrawideband monocycle pulse generation using nondegenerate two-photon absorption in a silicon waveguide. The free-carrier absorption induced pulse tail at the rising edge of in...
- Generation of sub-mJ terahertz pulses by optical rectification
[作者：Fulop, JA; Palfalvi, L; Klingebiel, S; Almasi, G; Krausz, F; Karsch, S; Hebling, J,期刊：OPTICS LETTERS, 页码：557-559 , 文章类型： Article，,卷期：2012年37-4]
- Recent theoretical calculations predicted an order-of-magnitude increase in the efficiency of terahertz pulse generation by optical rectification in lithium niobate when 500 fs long pump pulses are used, rather than the ...
- Near-surface modification of optical properties of fused silica by low-temperature hydrogenous atmospheric pressure plasma
[作者：Gerhard, C; Tasche, D; Bruckner, S; Wieneke, S; Viol, W,期刊：OPTICS LETTERS, 页码：566-568 , 文章类型： Article，,卷期：2012年37-4]
- In this Letter, we report on the near-surface modification of fused silica by applying a hydrogenous atmospheric pressure plasma jet at ambient temperature. A significant decrease in UV-transmission due to this plasma tr...
- Ti-free optical waveguiding regions produced by LiNbO3 etching during the indiffusion of Ti
[作者：Crasto, TD; Sivan, V; Nguyen, TG; Mitchell, A,期刊：OPTICS LETTERS, 页码：572-574 , 文章类型： Article，,卷期：2012年37-4]
- We report the observation, first to our knowledge, of optical waveguiding found beneath trenches etched in congruent lithium niobate using the recently reported etching during the indiffusion of Ti process. Observations ...
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