Assignee
SYCAMORE NETWORKS INC
US39 patents
Top patents by PatentIndex Score
US6433904B1Aug 13, 2002
Method and apparatus for improving transmission performance over wavelength division multiplexed optical communication links using forward error correction coding
SYCAMORE NETWORKS INC176 citations98
US6681248B1Jan 20, 2004
Method for port connectivity discovery in transparent high bandwidth networks
SYCAMORE NETWORKS INC79 citations96
US6430201B1Aug 6, 2002
Method and apparatus for transporting gigabit ethernet and fiber channel signals in wavelength-division multiplexed systems
SYCAMORE NETWORKS INC130 citations96
US6396051B1May 28, 2002
High resolution optical performance monitor for DWDM system
SYCAMORE NETWORKS INC62 citations96
US6580531B1Jun 17, 2003
Method and apparatus for in circuit biasing and testing of a modulated laser and optical receiver in a wavelength division multiplexing optical transceiver board
SYCAMORE NETWORKS INC130 citations95
US6912606B2Jun 28, 2005
Generic serial bus architecture
SYCAMORE NETWORKS INC71 citations94
US6433903B1Aug 13, 2002
Optical management channel for wavelength division multiplexed systems
SYCAMORE NETWORKS INC49 citations92
US6400479B1Jun 4, 2002
Optical power balancer for optical amplified WDM networks
SYCAMORE NETWORKS INC45 citations92
US6823470B2Nov 23, 2004
Method and apparatus for correcting data
SYCAMORE NETWORKS INC56 citations91
US6557101B1Apr 29, 2003
Methods and apparatus for upgrading programmable control logic without disturbing network traffic flowing through functional elements controlled by the control logic
SYCAMORE NETWORKS INC22 citations91
US6862564B1Mar 1, 2005
Network emulator
SYCAMORE NETWORKS INC54 citations90
US6445850B1Sep 3, 2002
Method and apparatus for per-band compensation with gap-free band structure for high speed DWDM transmission
SYCAMORE NETWORKS INC36 citations90
US6504631B1Jan 7, 2003
System and method providing control channel for wavelength-division multiplexed network
SYCAMORE NETWORKS INC21 citations89
US6529315B2Mar 4, 2003
Optical amplifier providing dispersion compensation
SYCAMORE NETWORKS INC28 citations88
US6826372B1Nov 30, 2004
Methods and apparatus for dynamic threshold setting for an optically amplified receiver
SYCAMORE NETWORKS INC39 citations86
US6587630B2Jul 1, 2003
Optical backplane cartridge
SYCAMORE NETWORKS INC62 citations85
US7012887B2Mar 14, 2006
Method for restoring diversely routed circuits
SYCAMORE NETWORKS INC21 citations84
US6807001B1Oct 19, 2004
Auto shutdown for distributed raman amplifiers on optical communication systems
SYCAMORE NETWORKS INC42 citations84
US9143575B2Sep 22, 2015
Distributed content caching solution for a mobile wireless network
SYCAMORE NETWORKS INC9 citations82
US6839871B2Jan 4, 2005
Method for transparent multiplexing of SONET/ SDH streams
SYCAMORE NETWORKS INC19 citations82
US6553175B2Apr 22, 2003
Variable optical attenuator
SYCAMORE NETWORKS INC35 citations81
US6754208B2Jun 22, 2004
Traffic spreading to reduce blocking in a groomed CLOS communication switch
SYCAMORE NETWORKS INC14 citations79
US6839866B2Jan 4, 2005
System and method for the use of reset logic in high availability systems
SYCAMORE NETWORKS INC19 citations76
US6741761B2May 25, 2004
Method for achieving improved transmission performance over fiber using a Mach-Zehnder modulator
SYCAMORE NETWORKS INC12 citations73
US6456409B2Sep 24, 2002
Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified DWDM system
SYCAMORE NETWORKS INC8 citations73
US6952405B2Oct 4, 2005
Coding scheme using a transition indicator for signal transmission in optical communications networks
SYCAMORE NETWORKS INC11 citations72
US6388805B1May 14, 2002
Two fiber support with single optical amplifier
SYCAMORE NETWORKS INC8 citations70
US6496305B2Dec 17, 2002
Two fiber support with single optical amplifier
SYCAMORE NETWORKS INC8 citations68
US6738262B2May 18, 2004
Port filler baffle
SYCAMORE NETWORKS INC11 citations66
US6661963B2Dec 9, 2003
System and method for calibrating and operating a semiconductor variable optical attenuator
SYCAMORE NETWORKS INC8 citations66
US6456427B1Sep 24, 2002
Systems and methods for reducing a signal spectrum tilt
SYCAMORE NETWORKS INC12 citations65
US6961525B2Nov 1, 2005
Method for channel balance
SYCAMORE NETWORKS INC2 citations63
US6735357B2May 11, 2004
Monitoring and control of all-optical cross connect fabrics using multiple laser sources
SYCAMORE NETWORKS INC4 citations63
US6614569B2Sep 2, 2003
System and method for narrow channel spaced dense wavelength division multiplexing/demultiplexing
SYCAMORE NETWORKS INC2 citations61
US6549312B2Apr 15, 2003
Method for designing optical filter cards
SYCAMORE NETWORKS INC2 citations60
US7826345B2Nov 2, 2010
Network span protection using span identifiers
SYCAMORE NETWORKS INC4 citations54
US6859468B2Feb 22, 2005
Method and system for mode stabilization of VCSELS using increased bias current
SYCAMORE NETWORKS INC0 citations51
US6483637B2Nov 19, 2002
System and method for per-band optical amplification
SYCAMORE NETWORKS INC1 citations51
US7050561B2May 23, 2006
Restoration scheme for mesh-based switching networks
SYCAMORE NETWORKS INC0 citations21