Transport Systems

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Browsing Transport Systems by Subject "'Applied Physics'"

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    Correction of periodic displacement non-linearities by two-wavelength interferometry - associated data
    (Cranfield University, 2021-08-23 10:26) Bridges, Angus; Yacoot, Andrew; Kissinger, Thomas; Humphreys, David; Tatam, Ralph
    Data associated with the publication "Correction of periodic displacement non-linearities by two-wavelength interferometry".
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    ItemOpen Access
    Data supporting 'Fibre-Coupled, Multiplexed Methane Detection Using Range Resolved Interferometry'
    (Cranfield University, 2023-02-10 15:51) Bremner, James; Kissinger, Thomas; Hodgkinson, Jane; Tatam, Ralph
    Dataset for paper: Fig 2 & Fig3: Time of measurement, The OPD being interrogated, The amplitude of the signal produced by the RRI system, The applied window used, The raw interferrometric signal from the photdiode Note: The Time measurement only applies to the measurement of the interferometric signal. The RRI signal amplitude is instantaneous Fig 4: The extracted light intensity passing through each tube as a function of time over the period of one ramp. (arbitary units) Fig 5 Absorption Heights: The height of the normalised absorption curves in each test Fig 5 Recorded Gas Flows: The gas flow measurements in each test that were used to calculate the gas concentrations in each test Fig 6: Allan Deviation: The value for the Allan Deviation at each integration period Fig 7: Cross Talk Raw Data: The height of the normalised absorption curve measured for Tube 1 in each test. Fig 7: Cross Talk Protocol: The gas flow supplied to each tube during each test.
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    ItemOpen Access
    strapy - scattering and transfer matrix model python
    (Cranfield University, 2020-04-01 11:22) Bridges, Angus; Yacoot, Andrew; Kissinger, Thomas; Tatam, Ralph
    strapy is python package implementing the combined transfer and scattering matrix modelling approach described in [1], jointly developed by the National Physical Laboratory and the Centre for Engineering Photonics at Cranfield University as part of an EPSRC funded iCASE studentship. The primary motivation to develop this software was to model the effects of multiple reflections and polarisation leakage within the optics of homodyne displacement measuring interferometers, however strapy is generally applicable to modelling the propagation of monochromatic light through networks of planar optical components. This archive record holds copies of strapy, along with the ctmm dependency and their respective documentation, as they were at the time of publication. For up to date copies of the software and documentation please refer to: - https://github.com/strapy-project/strapy - https://strapy.readthedocs.io - https://github.com/strapy-project/ctmm - https://ctmm.readthedocs.io If you find an interesting application for strapy please let us know. If you want to cite results found using strapy please cite the accompanying publication and the software DOI: A. Bridges; A. Yacoot; T. Kissinger; R. P. Tatam. 'Polarisation-sensitive transfer matrix modelling for displacement measuring interferometry', Cranfield University research data repository 10.17862/cranfield.rd.12001236
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    ItemOpen Access
    Underlying data for article titled 'The effect of UV irradiation duty cycle on the 2nd harmonic coupling efficiency in optical fiber long period gratings'
    (Cranfield University, 2018-07-19 14:39) Barrington, James; Partridge, Matthew; Tatam, Ralph; James, Stephen
    This data was used to generate Fig. 3, 4, and 5 presented in 'The effect of UV irradiation duty cycle on the 2nd harmonic coupling efficiency in optical fiber long period gratings'. The data set contains transmission spectra for a 380 um period LPG with duty cycles varying from 0-100% in 5% increments. Each duty cycle contains 10 spectra. File nomenclature is "X%_duty_cycle_Y" where X is percentage of duty cycle and Y is irradiation cycle number.