Universitat Politècnica de Catalunya - UPC


Posted by Universitat Politècnica de Catalunya - UPCResponsive · Patents for licensing · Spain

Summary of the technology

This Optical Network Unit (ONU) for next-generation optical access networks (FTTH PONs) shifts the down-stream wavelength in the optical spectrum for remodulation at the Customer Premises and transmission in the up-stream direction.

The Challenge

is to avoid this impairment.

The Technology

The new ONU module reuses the down-stream wavelength and shifts it slightly in the optical spectrum to avoid the down/up spectral overlap, by means of an optical single-side band modulation governed by a radio-frequency tone. Next, the shifted wavelength is modulated with the up-stream data, and it is optically amplified for the optical transmission from the customer premises to the CO.
To perform these operations, the ONU is based on a combination of electro-optical devices as semiconductor optical amplifiers and electro-absorption modulators, arranged in dual Mach-Zehnder structure, with carrier suppression to avoid the spectral overlap.

Current stage of development

Experimental set-up and validity tests passed. Partial results published at Journal of Lightwave Technology, vol 27, no. 17, pp. 3912-3918.

Applications and Target Market

Broadband Telecom System Vendors Broadband Telecom Operators Semiconductor laser manufacturers Broadband Optical Communications networks: access, metropolitan, transport Fiber-to-the-Home networks Next Generation - Passive Optical Networks (NG-PON)

Innovative advantages

Enables efficient WDM PONs Wavelength-agnostic colorless ONU (identical ONUs).
Cancellation of the Rayleigh-scattering effect in the transmission system.
Cancellation of the effect of optical reflections in the transmission system.
Implementable with integrated optics.
Transparent to the bit rate and the code.
Down-stream wavelength reuse for up-stream transmission in the same fiber and the same wavelength.

Intellectual property status

Granted Patent
Technology available for licensing and technical cooperation Patent Status Priority application

Technology Owner

Universitat Politècnica de Catalunya - UPC

Technology Transfer Office

Related keywords

  • Electronics, IT and Telecomms
  • Optical Networks and Systems
  • Optics
  • Fibre Optics
  • Communications
  • Commercial Communications
  • Telephone Related
  • Data Communications
  • Other Communications Related
  • wavelength shifter
  • optical fiber access

About Universitat Politècnica de Catalunya - UPC

Technology Transfer Office from Spain

The Universitat Politècnica de Catalunya - BarcelonaTech is a public institution dedicated to higher education and research in the fields of engineering, architecture and science, which contributes its knowledge and expertise in order to increase scientific output, transfer its results to society and provide a network of scientific and technical state-of-the-art facilities and technology valorization services that place us at the leading edge of innovation and economic development.

The UPC has established itself as a driver of innovation and is the technology partner of choice for companies and organizations with which it develops projects and builds partnerships. A role borne out by the numerous agreements and research projects that have been set in motion by groups, organizations and laboratories; the creation of new technology-based companies; the generation and exploitation of patents, and the scientific and technical services UPC makes available to its environment in order to generate progress and employment.

The Technology Transfer Office (SGI) is responsible of Designing, coordinating and implementing research valorisation strategies, carrying out the protection policy of the research results, marketing these results through license contracts and designing and setting up the University's enterprise creation model in order to transfer the results of the research to the market, protect and commercialize these results, promote the culture of entrepreneurship and innovation, and create technology-based companies within the UPC environment.

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