Adva Optical Networking Se

Deutschetelekom Ag

Xieon Networks S.a.r.l.

Adtran Networks Se

Sander Jansen

Klaus Grobe

Harald Rohde

Poul Kristensen

Christophe Meyer

Arne Striegler

Uwe Gröschner

Lars Grüner-Nielsen

Florian Azendorf

Vincentius Antonius Johannes Mar Sleiffer

Gunter Schubert

Hendrik Beil

Dirk Van Den Borne

Markus Lautenschlager

Markus Klumb

Michael Eiselt

David Stahl

Andrew Ellis

A system installed in a cross-border area between a provider network of a provider and a customer network of a customer includes: a smart optical network termination device (NT) at a site of the customer, wherein the smart optical NT is configured to implement a demarcation point between the customer network and the provider network, and wherein the smart optical NT is independent of a data rate passing through it and an optical interface connected to it; and a monitoring device located at a point of presence (POP) of the provider network. The smart optical NT is further configured to monitor a coupling of optical power by the customer into the provider network and to interact with the monitoring device via at least one traffic analysis point (TAP) for connectivity validation from the POP to the demarcation point.

Method and system to implement a demarcation point between a provider network and a customer network

An apparatus adapted to perform spectrometric measurements, said apparatus comprising a tunable laser light source adapted to generate a laser light with an excitation wavelength supplied to an optical sensor which produces a sample specific response light signal; an optical reference filter adapted to measure laser light with the excitation wavelength fed back as a reference signal to provide wavelength calibration of the tunable laser light source; at least one optical measurement filter adapted to measure the sample specific response light signal produced by the optical sensor, wherein the optical reference filter and the at least one optical measurement filter are thermally coupled to maintain a constant wavelength relationship between the filter characteristics of the optical filters.

Method and apparatus for performing spectrometric measurements

A systemfor remote sensing of information to be transmitted, said systemcomprising; an optical time-domain reflectometer, OTDR,adapted to transmit an optical probe signal OPS into an optical fiberand to measure a backscattered signal power; and at least one electro-optical signaling unitconnected to said optical fiber, wherein the electro-optical signaling unitis configured to change an attenuation and/or a reflection of the optical probe signal OPS depending on at least one signal provided by one or more signal sourcesin response to the information to be transmitted.

Remote sensing system

A method and apparatus for transporting data through a single optical fiber (SOF) the method comprising the steps of providing (S) transmission Tx, wavelength division multiplexed, WDM, data channels and reception Rx, wavelength division multiplexed, WDM, data channels having the same frequency grid with frequency gaps between the WDM data channels; frequency shifting (S) the Tx-WDM data channels and/or the Rx-WDM data channels to avoid spectral overlap between the Tx-WDM data channels and the Rx-WDM data channels; combining (S) the frequency shifted Tx-WDM data channels and the frequency shifted Rx-WDM data channels; and transporting (S) data via the combined WDM data channels through said single optical fiber (SOF) in opposite directions.

Method and apparatus for enabling a single fiber-working on an optical fiber

An Optical Line Terminal (OLT) transmitting device is provided, the device comprising an IQ modulator having a first input, a second input and an output, a first digital analog converter (DAC) directly coupled to the first input of the IQ modulator, a second digital analog converter (DAC) directly coupled to the second input of the IQ modulator; an optical filter directly coupled to the output of the IQ modulator.

Optical line terminal transmitting device for next generation optical access networks

Growing community of inventors

Germering, Germany

Sander Jansen