Inventor

FRIGO NICHOLAS J

US82 patents

⚠️ This page may combine multiple inventors who share the name “FRIGO NICHOLAS J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FRIGO NICHOLAS J

AT & T CORP

System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion, of RF service bands within wavelength bands

Micro-machine polarization-state controller

Micro-machined tunable delay line

Optical transmission system and method using an optical carrier drop/add transceiver

Low power optical network unit

System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion of RF service bands within wavelength bands

One-dimensional optical data arrays implemented within optical networks

Network comprising a space division photonic switch and a terminal which forms an output signal from an input signal

Method for increasing accuracy of measurement of mean polarization mode dispersion

Method, apparatus and system for minimally intrusive fiber identification

Estimating optical transmission system penalties induced by polarization mode dispersion (PMD)

Method for operating transparent node for WDM shared “virtual ring” networks

Fault location apparatus and procedures in CWDM business applications using wavelength selective OTDR

Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch

System for transparent node for WDM shared “virtual ring” networks

MAC protocol for optical packet-switched ring network

Long reach delivery of broadcast services using broadband optical sources and pre-compensation dispersion

Passive optical network using a fabry-perot laser as a multiwavelength source

Multiplicity of services via a wavelength division router

Estimating optical transmission system penalties induced by polarization mode dispersion (PMD)

Estimating optical transmission system penalties induced by polarization mode dispersion (PMD)

Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch

Method of flexible multiple broadcast service delivery over a WDM passive optical network based on RF Block-conversion of RF service bands within wavelength bands

Power spectrum monitoring and management in a wavelength division multiplexed network

Four-port wavelength-selective crossbar switches (4WCS) using reciprocal WDM MUX-DEMUX and optical circulator combination

Multiple input waveguide grating router for broadcast and multicast services

High-capacity packet-switched ring network

High-capacity packet-switched ring network

Technique for mitigation of polarization mode dispersion in fiber optic transmission links

Article comprising a photostrictive switching element

LUCENT TECHNOLOGIES INC

Passive optical network with diagnostic loop-back

Wavelength division multiplexing passive optical network including broadcast overlay

Optical node system for a ring architecture and method thereof

Optical communication system with improved maintenance capabilities

Optical communication system with improved maintenance capabilities

Method of recovering from a fiber-cable cut using random splicing reconnection

Passive optical network with bi-directional optical spectral slicing and loop-back

Arrangement for interconnecting an optical fiber to an optical component

Wavelength division multiplexing passive optical network with bi-directional optical spectral slicing

Coherent optical communication system

Multiple star, passive optical network based on remote interrogation of terminal equipment

Systems for monitoring optical path characteristics in an optical communication system

Methods for monitoring optical path characteristics in an optical communication system

Optical communication system and remote sensor interrogation

Optical node system for a ring architecture and method thereof

AT & T IP II LP

Method, apparatus and system for minimally intrusive fiber identification

Method, apparatus and system for minimally intrusive fiber identification

Method, apparatus and system for minimally intrusive fiber identification

US NAVY

Switched state fiber optic gyroscope

Optical waveguide device for frequency shifting and mode conversion