All-optical signal processing for optical packet switching networks

Y. Liu, M.T. Hill, N. Calabretta, E. Tangdiongga, R. Geldenhuys, S. Zhang, Z. Li, H. Waardt, de, G.D. Khoe, H.J.S. Dorren

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
1 Downloads (Pure)


We discuss how all-optical signal processing might play a role in future all-optical packet switched networks. We introduce a concept of optical packet switches that employ entirely all-optical signal processing technology. The optical packet switch is made out of three functional blocks: the optical header processing block, the optical memory block and the wavelength conversion block. The operation principle of the optical packet switch is explained. We show that these three functional blocks can be realized by using the nonlinearities of semiconductor optical amplifiers. Some technologies in these three functional blocks are described. The header processor is realized using a Terahertz Optical Asymmetric Demultiplexer. We also describe a header pre-processor to improve the extinction ratio of the header processor output. In the optical memory block, we show that an all-optical memory can be obtained by using two coupled lasers that form a master-slave configuration. The state of the optical memory is distinguished by the wavelength of the master laser. We extend the concept to an optical memory can have multiple states. In the wavelength conversion block, we demonstrate a 160 Gbit/s wavelength conversion using a single semiconductor optical amplifier in combination with a well-designed optical bandpass filter. The semiconductor optical amplifier has a gain recovery timegreater than 90 ps, which corresponds to a less than 20 GHz bandwidth for conventional wavelength conversion. We show that by properly using the optical bandpass filter, ultrafast dynamics in the semiconductor optical amplifier can be employed for wavelength conversion at ultrahigh bit-rates.
Original languageEnglish
Title of host publicationPhotonic devices and algorithms for computing VII , 1 - 2 August 2005, San Diego, California, USA
EditorsK.M. Iftekharuddin, A.A.S. awwal
Place of PublicationBellingham, Wash
ISBN (Print)0-8194-5912-7
Publication statusPublished - 2005
EventSPIE Optics & Photonics 2005 Symposium: Photonic Devices and Algorithms for Computing VII, July 31-August 4, 2005, San Diego, CA, USA - San Diego, CA, United States
Duration: 31 Jul 20054 Aug 2005

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


ConferenceSPIE Optics & Photonics 2005 Symposium: Photonic Devices and Algorithms for Computing VII, July 31-August 4, 2005, San Diego, CA, USA
Country/TerritoryUnited States
CitySan Diego, CA
OtherPhotonic Devices and Algorithms for Computing VII is waarschijnlijk één van de conferenties gehouden tijdes de SPIE Optics & Photonics 2005 Symposium (HdW)


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