Assignee
TYCOM US INC
US43 patents
Top patents by PatentIndex Score
US6496629B2Dec 17, 2002
Undersea telecommunications cable
TYCOM US INC273 citations97
US6341023B1Jan 22, 2002
Multiple level modulation in a wavelength-division multiplexing (WDM) systems
TYCOM US INC126 citations96
US6320884B1Nov 20, 2001
Wide bandwidth Raman amplifier employing a pump unit generating a plurality of wavelengths
TYCOM US INC95 citations95
US6181464B1Jan 30, 2001
Low noise Raman amplifier employing bidirectional pumping and an optical transmission system incorporating same
TYCOM US INC78 citations94
US6452707B1Sep 17, 2002
Method and apparatus for improving spectral efficiency in fiber-optic communication systems
TYCOM US INC16 citations92
US6414775B1Jul 2, 2002
Method and apparatus for measuring gain shape in an optical repeater using FM modulation
TYCOM US INC38 citations92
US6396624B1May 28, 2002
Extended band erbium doped fiber amplifier
TYCOM US INC22 citations92
US6327250B1Dec 4, 2001
Method and apparatus for supressing crosstalk between data and monitoring channel in an optical communication system
TYCOM US INC28 citations92
US6317238B1Nov 13, 2001
Chromatic dispersion management for optical wavelength division multiplexed transmission systems
TYCOM US INC26 citations92
US6259543B1Jul 10, 2001
Efficient method for assessing the system performance of an optical transmission system while accounting for penalties arising from nonlinear interactions
TYCOM US INC44 citations92
US6424455B1Jul 23, 2002
Wide bandwidth fiber raman amplifier
TYCOM US INC40 citations91
US6366381B1Apr 2, 2002
Remote monitoring of an optical transmission system using line monitoring signals
TYCOM US INC22 citations91
US6342961B1Jan 29, 2002
Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems
TYCOM US INC23 citations90
US6269515B1Aug 7, 2001
Apparatus for cleaning an optical fiber splicer electrode
TYCOM US INC29 citations89
US6404527B1Jun 11, 2002
Method and apparatus for transmitting a response signal from an optical repeater to a terminal requesting status information
TYCOM US INC20 citations88
US6349161B1Feb 19, 2002
Undersea communications cable having centrally located, plastic buffer tube
TYCOM US INC42 citations88
US6323981B1Nov 27, 2001
Method and apparatus for detecting intermittent faults in an optical communication system
TYCOM US INC50 citations88
US6311002B1Oct 30, 2001
Method and apparatus for reducing nonlinear penalties by proper arrangement of the dispersion map in an optical communication system
TYCOM US INC30 citations88
US6307667B1Oct 23, 2001
Gain-clamped erbium-doped fiber amplifier with pulsed compensating laser signal
TYCOM US INC32 citations88
US6414786B1Jul 2, 2002
Method and apparatus for reducing polarization dependent gain in Raman amplification
TYCOM US INC41 citations86
US6411413B1Jun 25, 2002
Method and apparatus for performing dispersion compensation without a change in polarization and a transmitter incorporating same
TYCOM US INC16 citations84
US6304351B1Oct 16, 2001
Universal branching unit
TYCOM US INC19 citations84
US6381394B1Apr 30, 2002
Method and apparatus for assembling an amplifier assembly
TYCOM US INC52 citations83
US6273941B1Aug 14, 2001
Desiccant package having a controllable permeation rate for high reliability applications
TYCOM US INC17 citations82
US6384962B1May 7, 2002
Method and apparatus to perform automatic gain equalization using raman amplifiers
TYCOM US INC18 citations80
US6295901B1Oct 2, 2001
Method and apparatus for coupling a fiber optic connector
TYCOM US INC18 citations79
US6424761B1Jul 23, 2002
Cable repeater connecting joint
TYCOM US INC18 citations78
US6381065B1Apr 30, 2002
Optical pump unit for an optical amplifier
TYCOM US INC18 citations77
US6289724B1Sep 18, 2001
Method and apparatus for examining internal components of a sealed container
TYCOM US INC15 citations73
US6407842B1Jun 18, 2002
Method and apparatus for transmitting a WDM optical signal having nonuniform channel spacings
TYCOM US INC13 citations72
US6438300B1Aug 20, 2002
Fiber retaining system
TYCOM US INC12 citations71
US6377735B1Apr 23, 2002
Fiber retaining system
TYCOM US INC12 citations71
US6322019B1Nov 27, 2001
Device for covering a jacketed fiber storage space
TYCOM US INC12 citations71
US6330390B1Dec 11, 2001
Device for winding optical fibers
TYCOM US INC7 citations70
US6367730B1Apr 9, 2002
Device for storing optical fibers
TYCOM US INC4 citations60
US6347760B1Feb 19, 2002
Device for storing optical fibers
TYCOM US INC6 citations60
US6343761B1Feb 5, 2002
Device for separating portions of spooled optical fibers
TYCOM US INC4 citations60
US6396991B1May 28, 2002
Fiber transport holding device and method
TYCOM US INC5 citations57
US6358085B1Mar 19, 2002
Connector assembly
TYCOM US INC2 citations53
US6313959B1Nov 6, 2001
Method and apparatus for mounting an optical element
TYCOM US INC5 citations52
US6355886B1Mar 12, 2002
Undersea trunk-and-branch logical ring networks
TYCOM US INC0 citations49
US6367331B1Apr 9, 2002
Method of forming a seal
TYCOM US INC3 citations45
US6356698B1Mar 12, 2002
Optical tray cover
TYCOM US INC0 citations40