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US 9,432,141 B2Granted
Optical network unit, method for processing data in an optical network and communication system
AssigneeXieon Networks S.a.r.l.
InventorsErich Gottwald, Harald Rohde
Life of this patent
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Abstract
An optical network unit has a tunable laser. The tunable laser is tunable such that a point-to-point connection to another optical network unit is established via an optical fiber. There is also provided a method for processing data in an optical network and a corresponding communication system. The tunable laser can be adjusted based on a detected collision, and a frequency grid can be supplied from a centralized component.
Claims15
An optical network unit, comprising:
- a receiver,
- a modulator,
- a tunable laser arranged for generating a local oscillator signal, the tunable laser being connected to said modulator and to said receiver, such that said local oscillator signal is fed both to the modulator and to the receiver,
- wherein the receiver is arranged, such that both the local oscillator signal of the tunable laser and an incoming data signal from another optical network unit are fed to said receiver,
- wherein the modulator is arranged for data modulating the local oscillator signal of said tunable laser to produce a data signal to be conveyed via an optical fiber,
- said tunable laser being tunable for establishing a point-to-point connection to said another optical network unit via said optical fiber by adjusting the wavelength of the local oscillator signal to the wavelength of said incoming data signal, and
- a processing unit configured to detect a pending or an occurring frequency collision and to adjust said tunable laser of said optical network unit to avoid or reverse the frequency collision.
4 more elements
A method for processing data in an optical network, the method comprises:
- generating a local oscillator signal with a tunable laser comprised in an optical network unit,
- feeding the local oscillator signal both to a modulator and to a receiving unit both comprised in said optical network unit,
- feeding an incoming data signal from another optical network unit to said receiver,
- data modulating the local oscillator signal of said tunable laser with via said modulator to produce a data signal to be conveyed via an optical fiber,
- adjusting said tunable laser by adjusting the wavelength of the local oscillator signal to the wavelength of said incoming data signal, such that a point-to-point connection to said another optical network unit is established via said optical fiber,
- detecting a pending or an occurring frequency collision, and
- adjusting said tunable laser to avoid or reverse the frequency collision.
4 more elements
Dependencies are inferred from the claim text.