Photonic Phase Conjugation Systems (PHOS)
Lead Research Organisation:
University of Southampton
Department Name: Optoelectronics Research Centre (ORC)
Abstract
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Organisations
Publications
Abu-Romoh M.
(2021)
Experimental verification of 64-Gbd/64-QAM interworking of probabilistic shaping with a digital resolution enhancer
in Optics InfoBase Conference Papers
Abu-Romoh M.
(2021)
Experimental verification of 64-Gbd/64-QAM interworking of probabilistic shaping with a digital resolution enhancer
in 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings
Anjum O
(2019)
Selective wavelength conversion in a few-mode fiber
in Optics Express
Anjum O
(2021)
All-optical control of spatial beam intensity in multimode fibres by polarisation modulation
in IET Optoelectronics
Anjum O
(2018)
Polarization-Insensitive Four-Wave-Mixing-Based Wavelength Conversion in Few-Mode Optical Fibers
in Journal of Lightwave Technology
Anjum O
(2019)
Bandwidth enhancement of inter-modal four wave mixing Bragg scattering by means of dispersion engineering
in APL Photonics
Anjum Omar F.
(2019)
Selective wavelength conversion in a few-mode fiber
in OPTICS EXPRESS
| Description | The PHOS project relates to the application of optical phase conjugation systems in the transmission of data signals in fibre optic communications. Through experimental demonstrations, we have shown that phase conjugation can substantially improve the quality of signals at the point of detection. Furthermore, PHOS has aimed to demonstrate how optical processing systems, i.e. systems that allow processing of data signals in an optical form without requiring an electronic processor, can be made practical for use in real-world applications. To this effect, we have developed a black-box prototype that performs wavelength conversion (the physical process underlying optical phase conjugation) and can be operated without any prior knowledge of the physical processes that take place in it. The prototype has been fully packaged and a suitable software has been developed to offer a suitable level of abstraction to the user. We believe that this represents one of the most complex optical prototype sub-systems ever attempted, requiring automated control of a number of off-the-shelf optical components. At the later stages of the project, we have explored in depth the onset of deleterious parametric frequency components and developed techniques for combating them. These components can give rise to crosstalk (i.e. interference with other (wanted) frequency components that compromise their quality) and severly limit the practicality of optical nonlinear systems. The technique developed in PHOS, which we have since patented, relies on dividing the signal propagation in the nonlinear device into two halves, and using the second half to "undo" the nonlinear effects responsible for the generation of undesired components during propagation in the first half. Other contributions that have resulted from PHOS relate to the exploitation of new frequency bands for optical communications and detailed studies into the effects of fibre birefringence and the stimulated Brillouin scattering on the performance of nonlinear optical devices. |
| Exploitation Route | The core objectives of the project have been met, and significant contributions to the transmission and processing of optical signals have been achieved. Nevertheless, it should be noted that the project has been affected severely by the pandemic, and as a result several of the activities that had been initially planned in order to generate and accelerate the project's impact had either to be put on hold or carried out on an ad hoc manner and virtually, which has admittedly been short of ideal. The development of the wavelength converter prototype in the project has offered a first-class opportunity to disseminate the project technology to outside users. Following the end of the project, we will continue to engage with the industrial partners of the project to obtain feedback and offer trials of the prototype in their testbeds. We will consult with our academic collaborators, especially those specialising in network control and management to explore routes for further development. We have already carried out an (online) presentation of the prototype at the world's greatest optical communications conference (OFC). Additionally, we anticipate that the patent that has been filed through the research in PHOS will offer opportunities for further engagement both with industrial and academic partners, and will expand the application field of optical signal processing. |
| Sectors | Aerospace Defence and Marine Digital/Communication/Information Technologies (including Software) Electronics Manufacturing including Industrial Biotechology Security and Diplomacy |
| Description | Implementations studied within PHOS were developed in a prototype through a project co-funded by an external (undisclosed) sponsor and the Univ. of Southampton's EPSRC Impact Acceleration Account.The prototype was delivered to the sponsor and is being used in their laboratories. One patent has been filed from the research carried out in PHOS and we will next engage with industrial partners to understand their interest in getting access to the technology. The findings from these project have led to further research, demonstrating wavelength conversion that is free from any spurious crosstalk effects that would otherwise be present. |
| First Year Of Impact | 2020 |
| Sector | Digital/Communication/Information Technologies (including Software),Security and Diplomacy |
| Impact Types | Economic |
| Description | UKTIN Academic Strategy Committee |
| Geographic Reach | National |
| Policy Influence Type | Participation in a guidance/advisory committee |
| URL | https://uktin.net/ |
| Description | An ultra-fast ultra-broadband photonic measurement facility |
| Amount | £2,507,782 (GBP) |
| Funding ID | EP/X030040/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 03/2023 |
| End | 12/2023 |
| Description | Industrial funding supported by RCUK Impact Acceleration Account Award |
| Amount | £220,000 (GBP) |
| Organisation | University of Southampton |
| Sector | Academic/University |
| Country | United Kingdom |
| Start | 02/2019 |
| End | 06/2021 |
| Description | Raman Distributed Feedback Fibre Lasers |
| Amount | £811,874 (GBP) |
| Funding ID | EP/Z533737/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 01/2025 |
| End | 01/2028 |
| Description | Silicon-rich silicon nitride Nonlinear Integrated Photonic ciRcuits & Systems (juNIPeRS) |
| Amount | £1,123,974 (GBP) |
| Funding ID | EP/T007303/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 03/2020 |
| End | 03/2024 |
| Title | All-optical mode and wavelength converter based on parametric processes in a three-mode fiber |
| Description | We demonstrate, both experimentally and numerically, all-optical mode and wavelength conversion both within the C-band and between the C- and L-bands. This is achieved by exploiting phase-matched inter-modal four-wave-mixing processes among the spatial modes of a three-mode fiber. By increasing the number of spatial modes supported by the fiber and tailoring their dispersion profile, it is envisaged that broadband operation over widely separated wavelength bands can be achieved in a single multi-mode fiber using this method. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |
| Impact | Supports public research. Translation of information to research relating in integrated photonic devices |
| URL | https://eprints.soton.ac.uk/id/eprint/416242 |
| Title | Dataset in support of the paper "Reflectometric Measurements of Fibre-based FWM Systems" |
| Description | Dataset to support the paper by H. Liu, K. R. H. Bottrill, A. Masoudi, V. Vitali and P. Petropoulos, "Reflectometric Measurements of Fibre-based Four-wave mixing Systems," in Journal of Lightwave Technology, doi: 10.1109/JLT.2023.3320982. This dataset contains data used for plotting all the figures. The data is presented in Excel files in direct reference to Figures 2, 3 and 4. The data shows measurements of the Rayleigh back-scattered power of the phase-conjugated idler generated by a four-wave mixing process. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Supporting published research. |
| URL | https://eprints.soton.ac.uk/id/eprint/482393 |
| Title | Dataset in support of the paper "Reflectometric Measurements of Fibre-based Orthogonal-pump FWM Systems" |
| Description | Dataset supporting the paper "Reflectometric Measurements of Fibre-based Orthogonal-pump FWM Systems," published in European Conference on Optical Communication (ECOC) 2022, J. Leuthold, C. Harder, B. Offrein, and H. Limberger, eds., Technical Digest Series (Optica Publishing Group, 2022), paper We4A.4. https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-We4A.4 This dataset contains data used for plotting all the figures in the article. The data demonstrates an optical time-domain reflectometry system with 50 cm spatial resolution, capable of measuring the onset of polarization dependency of orthogonal-pump four-wave mixing systems in the saturation regime. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Supporting published research. |
| URL | https://eprints.soton.ac.uk/id/eprint/482391 |
| Title | Dataset to support the paper "Broadband Incoherent-Pumped Raman Amplification for U-band Transmission Systems" |
| Description | Dataset to support the paper by N. Taengnoi, K. R. H. Bottrill, Y. Hong, L. Hanzo and P. Petropoulos, "Broadband Incoherently Pumped Raman Amplification for Ultra-Long Span U-band Transmission Systems," 2022 European Conference on Optical Communication (ECOC), Basel, Switzerland, 2022, pp. 1-4. https://ieeexplore.ieee.org/document/9979265 The data demonstrate broadband incoherently pumped U-band distributed Raman amplification for ultra-long span communications. Using a transmission NZDSF as the amplifying medium, transmission of 18.4 Gb/s DP-BPSK over a single span of 285 km is demonstrated. The data contains excel files for each figure, and are contained within a directory of the same name. Data files are named after the Figure they correspond to and contain the data necessary to recreate the plots. Data for Fig-1 is not included, as Fig-1 contains only a schematic This work was supported by the UK's EPSRC under the Airguide Photonics, COALESCE, and PHOS grants (EP/P030181/1, EP/P003990/1, EP/S002871/1). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Supporting published research. |
| URL | https://eprints.soton.ac.uk/id/eprint/486738 |
| Title | Mode division multiplexing free space optical transmission |
| Description | |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| URL | https://researchdata.aston.ac.uk/id/eprint/538 |
| Description | DTU ML transmission |
| Organisation | Technical University of Denmark |
| Department | Department of Photonics Engineering |
| Country | Denmark |
| Sector | Academic/University |
| PI Contribution | We carried out experiments in our labs and over the EPSRC National Dark Fibre Facility. |
| Collaborator Contribution | They provided machine learning algorithms for controlling the transmission over the network. This was a collaborative experiment with our collaborators processing the data that we generated, and feeding back the signal parameters that were needed for the transmission. |
| Impact | Published research: [1] R. T. Jones, K. R. H. Bottrill, N. Taengnoi, P. Petropoulos, and M. P. Yankov, "Spectral power profile optimization of a field-deployed wavelength-division multiplexing network enabled by remote EDFA modeling," Journal of Optical Communications and Networking, vol. 15, no. 8, pp. C192-C202, 2023. [Online]. Available: https://eprints.soton.ac.uk/481032/. [2] R. T. Jones, K. R. H. Bottrill, N. Taengnoi, P. Petropoulos, and M. P. Yankov, "Spectral Power Profile Optimization of Field-Deployed WDM Network by Remote Link Modeling," presented at the 2022 European Conference on Optical Communication, ECOC 2022 (18/09/22 - 22/09/22), 2022. [Online]. Available: https://eprints.soton.ac.uk/481029/. Optical systems engineering from Southampton was combined with signal processing and machine learning expertise from DTU. |
| Start Year | 2021 |
| Description | Project Partner - Aston |
| Organisation | Aston University |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Exchange of ideas; work on project deliverables |
| Collaborator Contribution | Exchange of ideas; work on project deliverables |
| Impact | No joint research outputs yet. |
| Start Year | 2018 |
| Description | Project Partner - BT |
| Organisation | BT Group |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Exchange of ideas |
| Collaborator Contribution | Exchange of ideas; industrial expertise |
| Impact | No outputs yet. |
| Start Year | 2018 |
| Description | Project Partner - Huawei |
| Organisation | Huawei Technologies Research and Development UK Ltd |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Expertise on parametric amplifiers |
| Collaborator Contribution | Exchange of ideas; industrial perspective |
| Impact | Confidential |
| Start Year | 2018 |
| Description | Project Partner - OFS |
| Organisation | OFS Denmark |
| Country | Denmark |
| Sector | Private |
| PI Contribution | Novel use of fiber technology |
| Collaborator Contribution | Access to specialty fibres |
| Impact | [1] K. R. H. Bottrill, N. Taengnoi, F. Parmigiani, D. J. Richardson, and P. Petropoulos, "PAM4 transmission over 360 km of fibre using optical phase conjugation," OSA Continuum, vol. 2, no. 3, pp. 973-982, 2019/03/15 2019. [2] K. R. H. Bottrill, N. Taengnoi, Y. Hong, D. J. Richardson, and P. Petropoulos, "Self-pumping saturated four wave mixing through harmonic synthesis," in ECOC'2019, Dublin, 2019, p. paper Tu.1.C.6. Ongoing work |
| Start Year | 2018 |
| Description | Project Partner - Phoenix |
| Organisation | Phoenix Photonics Ltd. |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Development of novel sub-systems |
| Collaborator Contribution | Prototyping expertise |
| Impact | Ongoing work |
| Start Year | 2018 |
| Description | Project Partner - Phoenix |
| Organisation | Phoenix Photonics Ltd. |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Development of novel sub-systems |
| Collaborator Contribution | Prototyping expertise |
| Impact | Ongoing work |
| Start Year | 2018 |
| Title | APPARATUS FOR USE IN FOUR WAVE MIXING AND METHOD FOR CONFIGURING A PHASE ADJUSTING MEANS THEREIN TO SUPPRESS UNWANTED IDLERS |
| Description | This filing describes a method for suppressing parasitic nonlinear components while preserving those required in a nonlinear optical system. The method is useful in applications relating to the processing of optical signals. |
| IP Reference | 2201809.7 |
| Protection | Patent application published |
| Year Protection Granted | 2022 |
| Licensed | No |
| Impact | It is currently too early to say. |
| Description | DTU workshop |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | We delivered a presentation on our activities at a virtual workshop organised by the Danish Technical University. The presentation led directly to joint experiments with researchers at DTU that have made use of the National Dark Fibre Facility. |
| Year(s) Of Engagement Activity | 2021 |
| Description | Membership in UKTIN Academic Strategic Working Group |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Policymakers/politicians |
| Results and Impact | Defining recommendations for the UK telecommunications strategy. Informing research organisations, policymakers and funding bodies on directions of strategic importance. |
| Year(s) Of Engagement Activity | 2023,2024 |
| URL | https://uktin.net/ |
| Description | OFC workshop |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | A workshop was organised on the theme of commercialisation of new photonic technologies. The event was organised by the PI of the award (Petropoulos) on behalf of the Optical Society of America, and included a presentation of a wavelength converter prototype that was developed during the project (delivered by Bottrill). The event generated significant interest by the audience and led to follow-up discussions on the subject and specifically, the topic of the prototype developed during the project. |
| Year(s) Of Engagement Activity | 2021 |
| Description | Participation (by invitation) to international industrial workshop at OFC 2023 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Industry/Business |
| Results and Impact | Participation to present at a mini-symposium organised by an industrial partner, as part of their engagement activities with academia. |
| Year(s) Of Engagement Activity | 2023 |