Mikael J Eliasson, Kenji Sampei, Allen S Mandir, Patricia D Hurn, Richard J Traystman, Jun Bao, Andrew Pieper, Ted M Dawson, Solomon Snyder, Valina L Dawson: Method of using selective parp inhibitors to prevent or treat neurotoxicity. Johns Hopkins University, Banner & Witcoff, March 19, 2002: US06358975 (19 worldwide citation)

Neutral tissue damage resulting for ischemia and reperfusion injury or neurodegenerative diseases can be prevented by administering therapeutically effective amounts of certain selective inhibitors of poly(ADP-ribose)polymerase. The inhibitors can be administered intravenously, intraperitoneally, in ...

Jun Bao: Optical amplifier configuration including shared pumps. Ciena Corporation, David L Soltz, July 30, 2002: US06426833 (14 worldwide citation)

An optical amplifier including shared pumps sources. Outputs from a plurality amplifier pump sources are combined and then divided before being injected into one or more amplifying fiber segments. By sharing pumps, signal loss is avoided in the event of pump failure.

Shan Zhong, Jun Bao: Signal distribution module for a directionless reconfigurable optical add/drop multiplexer. Ciena Corporation, Clements Bernard PLLC, Christopher L Bernard, Tyler S Brown, March 1, 2011: US07899334 (10 worldwide citation)

The present invention provides a signal distribution module for use in a directionless reconfigurable optical add/drop multiplexer application, including: a multi-cast switch having a plurality of input ports and a plurality of output ports; a plurality of optical amplifiers coupled to the plurality ...

Donald J Miller, John Brownlee, Jun Bao, Si Hyung Cho: Method and apparatus for expanding the dynamic range of optical amplifiers. Ciena Corporation, Michael R Cammarata, April 13, 2004: US06721089 (9 worldwide citation)

The dynamic range of an optical amplifier is extended by the addition of a power control circuit. A switch is interposed between a current source and an optical pump supplying pumping light to the gain medium of the optical amplifier. A modulated signal such as a pulse-width modulated signal is used ...

Waqar Mahmood, Jun Bao, Andrei Csipkes: System for controlling a process for interconnection of optical fibers including fuzzy logic control and optimization architecture. Ciena Corporation, David L Soltz, Daniel N Daisak, Michael R Cammarata, January 22, 2002: US06341242 (9 worldwide citation)

Control of an interconnection process for optical fibers involves evaluating the status of all modules used in the process and moving an optical fiber through the process in accordance with the status of the modules. Such control allows more than one fiber, and more than one fiber type, to be proces ...

Alan Stummer, Jun Bao: Optical amplifier transient control apparatus. Ciena Corporation, Michael R Cammarata, January 13, 2004: US06678088 (8 worldwide citation)

An optical amplifier control circuit and method controls transients and avoids the problems associated with measuring gain. The input power level is detected and amplified by a transient control setting to provide a desired gain value against which is compared the output power level. This transient ...

Mu Chen, Michael E Casey, Jun Bao: Apparatus for automatic calibration of PET/CT systems. Siemens Medical Solutions USA, August 4, 2009: US07569829 (7 worldwide citation)

A calibration system for a combined Positron Emission Tomography (PET)/Computed Tomography scanner system, may have a support structure carrying a rotation motor driving a phantom, wherein the phantom has at least two phantom rods and the rods are positioned such that they are neither parallel nor c ...

Balakrishnan Sridhar, Clark Scrandis, James E DeGrange Jr, Michael G Taylor, Jun Bao: Three-stage optical amplifier having flat spectral gain. CIENA Corporation, Michael R Cammarata, May 31, 2005: US06900931 (5 worldwide citation)

A three stage optical amplifier is disclosed having a substantially flat gain profile. The amplifier includes a variable optical attenuator coupled between second and third stages of the amplifier and a dispersion compensating element. The attenuation of the optical attenuator is adjusted in accorda ...

Balakrishnan Sridhar, Jun Bao: Method and apparatus for optical amplifying device gain control with gain threshold. Ciena Corporation, Clements Bernard Miller, Christopher L Bernard, Tyler S Brown, July 15, 2008: US07400443 (4 worldwide citation)

Optical amplifying method and apparatus are proposed. Constant gain amplifiers operate such that the output power of the amplifier generally tracks the input power. However, optical systems are not perfect and the input to the optical amplifier stage includes not only the desired signal, but also in ...

Charles W Haggans, Jun Bao, Harshad Sardesai, Michael Y Frankel, Mahir Nayfeh, Balakrishnan Sridhar, Vipul Bhatnagar: Optical communication system having dynamic gain equalization. Ciena Corporation, Merek Blackman & Voorhees, July 11, 2006: US07075711 (4 worldwide citation)

An optical communication device, and related method, are provided for reducing ripple in WDM systems. In particular, the optical communication device includes a dynamic gain equalization (DGE) circuit is coupled to an optical communication path carrying the WDM optical signals. The DGE circuit adjus ...