Skip to content

Research at St Andrews

Optical delay beyond the time-bandwidth limit: from pipe dream to reality

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Author(s)

Sebastian A. Schulz, D. Grassani, I. Cardea, S. J. Fabbri, J. Upham, R. W. Boyd, K. L. Tsakmakidis, C.-S. Brès

School/Research organisations

Abstract

All resonant systems throughout science and engineering, independent of their physical implementation have a bandwidth that is inversely related to the decay time. A similar relation exists in all slow-light systems, where the group index (and therefore the delay for a given footprint) is inversely related to the bandwidth. Therefore, resonant or slow-light systems can either store a broad signal for a short time, or a narrow signal for a long time, but cannot achieve large delay for broad bandwidth signals.Here we discuss our recent work on non-reciprocal optical systems that are not constrained by the delay-bandwidth limit. We show that large, broadband optical delay is not a pipe dream and is achievable with current optical technology. We discuss the underlying physics of delay and bandwidth in non-reciprocal optical systems and present an experimental implementation, based on a figure-9 cavity. We demonstrate a delay-bandwidth product 30 times above the seemingly fundamental time-bandwidth limit of traditional systems. Furthermore, we show that the optical pulse can be released after an arbitrary number of round trips, providing the control and tunability lacking from conventional spiral waveguide or fibre loop delay lines.

Close

Details

Original languageEnglish
Title of host publication21st International Conference on Transparent Optical Networks, ICTON 2019
PublisherIEEE Computer Society
Pages1-4
Number of pages4
ISBN (Electronic)9781728127798
DOIs
Publication statusPublished - 19 Sep 2019
Event21st International Conference on Transparent Optical Networks, ICTON 2019 - Angers, France
Duration: 9 Jul 201913 Jul 2019
Conference number: 21
http://www.icton2019.com/

Publication series

NameInternational Conference on Transparent Optical Networks
Volume2019-July
ISSN (Electronic)2162-7339

Conference

Conference21st International Conference on Transparent Optical Networks, ICTON 2019
Abbreviated titleICTON
CountryFrance
CityAngers
Period9/07/1913/07/19
Internet address

    Research areas

  • Delay-bandwidth product, Non-reciprocity, Optical fibres

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Towards fully integrated photonic displacement sensors

    Bag, A., Neugebauer, M., Mick, U., Christiansen, S., Schulz, S. A. & Banzer, P., 9 Jun 2020, In : Nature Communications. 11, 7 p., 2915.

    Research output: Contribution to journalArticle

  2. Weak superradiance in arrays of plasmonic nanoantennas

    Choudhary, S., De Leon, I., Swiecicki, S., Awan, K. M., Schulz, S. A., Upham, J., Alam, M. Z. & Boyd, R. W., Oct 2019, In : Physical Review. A, Atomic, molecular, and optical physics. 100, 4, p. 1-9 9 p., 043814.

    Research output: Contribution to journalArticle

  3. Flexible patches for mm-wave holography

    Burch, J., Ma, J., Hunter, R. I., Schulz, S. A., Robertson, D. A., Smith, G. M., Wang, J. & Di Falco, A., 10 Jul 2019, In : Applied Physics Letters. 115, 2, 5 p., 021104.

    Research output: Contribution to journalArticle

  4. Conformable optical coatings with epsilon near zero response

    Li, X., Rizza, C., Schulz, S. A., Ciattoni, A. & Di Falco, A., 31 May 2019, In : APL Photonics. 4, 5, 5 p., 056107.

    Research output: Contribution to journalLetter

  5. Low-loss, compact, spot-size-converter based vertical couplers for photonic integrated circuits

    Singaravelu, P. K. J., Devarapu, G. C. R., Schulz, S. A., Wilmart, Q., Malhouitre, S., Olivier, S. & O'Faolain, L., 22 May 2019, In : Journal of Physics D : Applied Physics. 52, 21, 5 p., 214001.

    Research output: Contribution to journalArticle

ID: 262039267

Top