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Topic Area: Optical Physics
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Displaying records 51 to 59.
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51. Off-line monitoring of OSNR/CD/PMD degradation effects using neural-network-based training sequences
Topic: Optical Physics
Published: 9/1/2008
Authors: Jeffrey A Jargon, Xiaoxia Wu, Alan Willner
Abstract: A technique using artificial neural networks to simultaneously identify OSNR, CD, and PMD from eye-diagram parameters is demonstrated both via simulation and experimentally in 40 Gb/s OOK and DPSK systems. A correlation coefficient of 0.99 is obtaine ...

52. Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise
Topic: Optical Physics
Published: 5/19/2008
Authors: Nathan Reynolds Newbury, Paul A Williams, William C Swann
Abstract: We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber using the standard Doppler-cancellation approach to remove the effects of the fiber-link noise. The fundamental limit to the frequency instab ...

53. Improving squeezing purity from a KNbO^u3^ crystal by temperature tuning
Topic: Optical Physics
Published: 5/4/2008
Authors: Thomas Gerrits, Tracy S. Clement, Scott Glancy, Richard P Mirin, Sae Woo Nam, Emanuel Knill
Abstract: We show a method to increase the purity of a squeezed state generated by a femtosecond laser and down-conversion crystal. The method relies on temperature tuning the down- and up-converting crystals, which changes the spatial and spectral output mode ...

54. Uniform and enhanced field emission from chromium oxide coated carbon nanosheets
Topic: Optical Physics
Published: 4/2/2008
Authors: Uwe Arp, Kun Hou, Ronald Outlaw, Wang Sigen, Mingyao Zhu, Ronald Quinlan, Dennis Manos, Martin Kordesch, Brian Holloway
Abstract: Carbon nanosheets, a two-dimensional carbon nanostructure, are promising electron cathode materials for applications in vacuum microelectronic devices. This letter demonstrates a simple approach to improve the spatial emission uniformity of carbon na ...

55. Fiber lasers for frequency standards in optical communications
Topic: Optical Physics
Published: 2/24/2008
Authors: Nathan Reynolds Newbury, William C Swann, Ian R Coddington, Paul A Williams
Abstract: Optical light with millihertz relative frequency stabilities and subfemtosecond timing jitter can be produced from stabilized cw or mode-locked fiber lasers. We will discuss the generation, fiber-optic distribution and some applications of these cohe ...

56. Confirmation of Interstellar Methycyanodiacetylene (CH3C5N)
Topic: Optical Physics
Published: 4/11/2006
Authors: Lewis E Snyder, J M Hollis, P R Jewell, Francis John Lovas, A J Remijan
Abstract: Ten spectral lines of the symmetric-top molecule methylcyanodiacetylene (CH3C5N) have been detected with the 100 m Green Bank Telescope (GBT) toward the Taurus molecular cloud TMC-1. Both K=0 and K=1 components of the 12K-11K, 13K-12K, 14K-13K, 15K- ...

57. Wavelength References for Optical Interferometry
Topic: Optical Physics
Published: 6/12/2005
Authors: Richard W Fox, Leo W. Hollberg
Abstract: We are exploring air wavelength references useful for interferometry. Femtosecond comb frequency measurements determine mode wavelengths of a stable optical cavity in vacuum, and subsequently a tunable laser is locked to the modes in air.

58. Femtosecond-Laser-Based Optical Clockwork with Instability < 6.3 {multiply} 10^u-16^ in 1 s
Topic: Optical Physics
Published: 1/1/2002
Authors: Scott A Diddams, Leo W. Hollberg, L -S Ma, Lennart Robertsson

59. Polarization Directions of Non-Collinear Phase Matched Optical Parametric Down-Conversion Output
Topic: Optical Physics
Published: 5/1/1997
Author: Alan L Migdall

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