Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8872163
J. M. Christian, H. Middleton-Spencer
The scattering of light from fractal screens has been a topic of sustained interest in optics for many decades. A common thread weaving together much of the theoretical literature is the scalar approximation, wherein the polarization state of the electromagnetic field is not a primary concern. Experiments and their supporting analyses have also been confined largely to Fraunhofer [1,2] or, more recently, Fresnel [3] regimes. Here, these various simplifications are rolled back in order to address the scattering problem in a more fundamental way.
{"title":"Scattering of Electromagnetic Waves by Cantor Screens: Rayleigh-Sommerfeld Integrals on Complex Domains","authors":"J. M. Christian, H. Middleton-Spencer","doi":"10.1109/CLEOE-EQEC.2019.8872163","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872163","url":null,"abstract":"The scattering of light from fractal screens has been a topic of sustained interest in optics for many decades. A common thread weaving together much of the theoretical literature is the scalar approximation, wherein the polarization state of the electromagnetic field is not a primary concern. Experiments and their supporting analyses have also been confined largely to Fraunhofer [1,2] or, more recently, Fresnel [3] regimes. Here, these various simplifications are rolled back in order to address the scattering problem in a more fundamental way.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"7 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83780230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8871792
A. Gray, L. Carpenter, S. Berry, J. Gates, C. Holmes, Peter G. R. Smith, C. Gawith
Tailored laser sources for UV/blue wavelengths are in ever-increasing demand due to the advancing fields of quantum ion-trapping, metrology and computation. In particular, compact sources are required for the field deployment of quantum technologies. In recent work, we demonstrated the ability to fabricate ridge waveguides in Periodically Poled Lithium Niobate (PPLN) for Rb atom trapping based on 1560 nm Second Harmonic Generation (SHG) and mode matched to standard telecommunications optical fibre [1]. Here, we present our advancement of this work toward UV generation at 369 nm for Yb+ Doppler cooling, with an emphasis on manufacturing scalability.
{"title":"Development of Periodically Poled Lithium Niobate Zinc-Indiffused Ridge Waveguides at Blue Wavelengths","authors":"A. Gray, L. Carpenter, S. Berry, J. Gates, C. Holmes, Peter G. R. Smith, C. Gawith","doi":"10.1109/CLEOE-EQEC.2019.8871792","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871792","url":null,"abstract":"Tailored laser sources for UV/blue wavelengths are in ever-increasing demand due to the advancing fields of quantum ion-trapping, metrology and computation. In particular, compact sources are required for the field deployment of quantum technologies. In recent work, we demonstrated the ability to fabricate ridge waveguides in Periodically Poled Lithium Niobate (PPLN) for Rb atom trapping based on 1560 nm Second Harmonic Generation (SHG) and mode matched to standard telecommunications optical fibre [1]. Here, we present our advancement of this work toward UV generation at 369 nm for Yb+ Doppler cooling, with an emphasis on manufacturing scalability.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"23 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90631047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8872803
P. Gow, R. Bannerman, J. Gates, P. Mennea, C. Holmes, Alexander Jantzen, Peter G. R. Smith
Direct UV writing is capable of fabricating low-loss channel waveguides, couplers and Bragg gratings in planar silica by translation through a focused UV beam. Devices are typically fabricated using 244nm laser light, relying on the photosensitivity provided by doping to induce sufficient refractive index change necessary to form waveguides. However, these devices also require hydrogen and deuterium loading prior to writing to induce sufficient refractive index change to form waveguides [1]. Hydrogenation not only requires additional processing but over time the hydrogen present within the silica depletes, which can cause variation of the final written structures. Deep UV light at 213 nm has previously been used to inscribe strong fibre Bragg gratings (FBGs) in hydrogen-free Ge-doped fibres achieving an index change of 1.2×10−3 [2]. Here we present the first use of a 213 nm UV laser to induce index change sufficient to simultaneously define waveguides and Bragg gratings in planar silica without hydrogenation. This would potentially allow writing of large area or two-dimensional devices without variation due to outgassing.
{"title":"Integrated Waveguides and Bragg Gratings UV Written with 213Nm Light","authors":"P. Gow, R. Bannerman, J. Gates, P. Mennea, C. Holmes, Alexander Jantzen, Peter G. R. Smith","doi":"10.1109/CLEOE-EQEC.2019.8872803","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872803","url":null,"abstract":"Direct UV writing is capable of fabricating low-loss channel waveguides, couplers and Bragg gratings in planar silica by translation through a focused UV beam. Devices are typically fabricated using 244nm laser light, relying on the photosensitivity provided by doping to induce sufficient refractive index change necessary to form waveguides. However, these devices also require hydrogen and deuterium loading prior to writing to induce sufficient refractive index change to form waveguides [1]. Hydrogenation not only requires additional processing but over time the hydrogen present within the silica depletes, which can cause variation of the final written structures. Deep UV light at 213 nm has previously been used to inscribe strong fibre Bragg gratings (FBGs) in hydrogen-free Ge-doped fibres achieving an index change of 1.2×10−3 [2]. Here we present the first use of a 213 nm UV laser to induce index change sufficient to simultaneously define waveguides and Bragg gratings in planar silica without hydrogenation. This would potentially allow writing of large area or two-dimensional devices without variation due to outgassing.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"4 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79921297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8872547
J. M. Christian, H. Middleton-Spencer
The diffraction of plane waves by perfectly-conducting thin screens is of fundamental physical and mathematical interest in electromagnetics [1]. Classic laser-optics experiments involve both open (single- and double-slit arrangements) and closed (circular and regular-polygon) apertures, with analyses often being confined to the Fresnel [2] and Fraunhofer [3] regimes. Here, we consider a class of scattering problem involving fully-2D fractal screens, where the scatterer possesses the property of self-similarity. A more general formulation of the diffracted wave, based on Kirchhoff's theory and 3D Green's functions [4], is also deployed.
{"title":"Electromagnetic Diffraction by Fractal Dusts, Triangles and Carpets: A Kirchhoff Approach to Circulation","authors":"J. M. Christian, H. Middleton-Spencer","doi":"10.1109/CLEOE-EQEC.2019.8872547","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872547","url":null,"abstract":"The diffraction of plane waves by perfectly-conducting thin screens is of fundamental physical and mathematical interest in electromagnetics [1]. Classic laser-optics experiments involve both open (single- and double-slit arrangements) and closed (circular and regular-polygon) apertures, with analyses often being confined to the Fresnel [2] and Fraunhofer [3] regimes. Here, we consider a class of scattering problem involving fully-2D fractal screens, where the scatterer possesses the property of self-similarity. A more general formulation of the diffracted wave, based on Kirchhoff's theory and 3D Green's functions [4], is also deployed.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"9 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87131958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8871606
J. Leuermann, Í. Molina-Fernández, A. Ortega-Moñux, J. Wangüemert-Pérez, R. Halir
Integrated photonic biosensors are capable of detecting trace amounts of biochemical substances without time-consuming labeling steps [1]. Ring resonators and Mach-Zehnder interferometers (MZI) are among the most widely used sensor architectures. The latter can operate with a simple, fixed-wavelength source and have recently shown state-of-the-art limit of detections (LOD) (10−7–10−8 RIU) [2] by using the coherent phase read-out illustrated in Fig. 1(a), overcoming sensitivity fading and directional ambiguity [3]. Sensors using resonant structures often require a wavelength-swept source or broadband source combined with a spectrum analyzer [4]. However, they can also be interrogated with a coherent detection scheme and a fixed wavelength source, shown in Fig. 1(b), making them especially suited for cost sensitive point-of-care devices.
{"title":"Comparing the Fundamental Limit of Detection for Interferometric and Resonant Biosensors with Coherent Phase Read-Out","authors":"J. Leuermann, Í. Molina-Fernández, A. Ortega-Moñux, J. Wangüemert-Pérez, R. Halir","doi":"10.1109/CLEOE-EQEC.2019.8871606","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871606","url":null,"abstract":"Integrated photonic biosensors are capable of detecting trace amounts of biochemical substances without time-consuming labeling steps [1]. Ring resonators and Mach-Zehnder interferometers (MZI) are among the most widely used sensor architectures. The latter can operate with a simple, fixed-wavelength source and have recently shown state-of-the-art limit of detections (LOD) (10−7–10−8 RIU) [2] by using the coherent phase read-out illustrated in Fig. 1(a), overcoming sensitivity fading and directional ambiguity [3]. Sensors using resonant structures often require a wavelength-swept source or broadband source combined with a spectrum analyzer [4]. However, they can also be interrogated with a coherent detection scheme and a fixed wavelength source, shown in Fig. 1(b), making them especially suited for cost sensitive point-of-care devices.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"35 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89595830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-27DOI: 10.1109/CLEOE-EQEC.2019.8872879
Lyubov V. Amitonova, T. Tentrup, I. Vellekoop, P. Pinkse
Secure communication became extremely important in the Information Age [1]. Quantum communication protocols have been developed to provide absolutely secure transmission of information [2]. Historically, quantum key distribution (QKD) uses the two-dimensional polarization basis to encode information and the key element of long-distance communication is single-mode optical fiber. However, it intrinsically limits the information content to 1 bit per photon. Nowadays, significant effort is devoted to increase the data carrying capacity of a single quantum secure optical line [3]. Large-core multimode fibers support a multitude of transverse optical modes and can potentially transfer information at much higher density.
{"title":"Method for Quantum Key Establishment through a Multimode Fiber","authors":"Lyubov V. Amitonova, T. Tentrup, I. Vellekoop, P. Pinkse","doi":"10.1109/CLEOE-EQEC.2019.8872879","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872879","url":null,"abstract":"Secure communication became extremely important in the Information Age [1]. Quantum communication protocols have been developed to provide absolutely secure transmission of information [2]. Historically, quantum key distribution (QKD) uses the two-dimensional polarization basis to encode information and the key element of long-distance communication is single-mode optical fiber. However, it intrinsically limits the information content to 1 bit per photon. Nowadays, significant effort is devoted to increase the data carrying capacity of a single quantum secure optical line [3]. Large-core multimode fibers support a multitude of transverse optical modes and can potentially transfer information at much higher density.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"26 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89504533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-26DOI: 10.1109/CLEOE-EQEC.2019.8872314
O. A. Abbas, He Wang, A. Lewis, N. Sessions, N. Aspiotis, Chung-Che Huang, I. Zeimpekis, D. Hewak, S. Mailis, P. Sazio
Two-dimensional transition metal dichalcogenides (2D-TMDCs) such as molybdenum disulphide (2D-M0S2) and tungsten disulphide (2D-WS2) are now established as a class of nanomaterials that can be used in numerous applications due to their tuneable physical and chemical properties [1]. However, in terms of electrical characteristics and photoluminescence efficiency, WS2 typically exhibits superior performance compared with the molybdenum analogue [2,3]. Nevertheless, synthesis of continuous, uniform and thickness controllable 2D-WS2 films for (opto)electronic device fabrication is more challenging compared with better established 2D-MoS2 growth protocols. Therefore, the search for alternative precursors and synthesis approaches of 2D-WS2 that can provide mass production with excellent quality at low cost is highly desirable [1].
{"title":"Growth of Large-Area, Uniform, Few-Layer Tungsten Disulphide by Thermal Decomposition of Ammonium Tetrathiotungstate","authors":"O. A. Abbas, He Wang, A. Lewis, N. Sessions, N. Aspiotis, Chung-Che Huang, I. Zeimpekis, D. Hewak, S. Mailis, P. Sazio","doi":"10.1109/CLEOE-EQEC.2019.8872314","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872314","url":null,"abstract":"Two-dimensional transition metal dichalcogenides (2D-TMDCs) such as molybdenum disulphide (2D-M0S2) and tungsten disulphide (2D-WS2) are now established as a class of nanomaterials that can be used in numerous applications due to their tuneable physical and chemical properties [1]. However, in terms of electrical characteristics and photoluminescence efficiency, WS2 typically exhibits superior performance compared with the molybdenum analogue [2,3]. Nevertheless, synthesis of continuous, uniform and thickness controllable 2D-WS2 films for (opto)electronic device fabrication is more challenging compared with better established 2D-MoS2 growth protocols. Therefore, the search for alternative precursors and synthesis approaches of 2D-WS2 that can provide mass production with excellent quality at low cost is highly desirable [1].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"12 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84670579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-26DOI: 10.1109/CLEOE-EQEC.2019.8873332
C. Mitchell, Amy S. K. Tong, J. Wilkinson, J. Mackenzie
Thulium-doped glass has recently been highlighted as a potential candidate for amplifiers in a new telecommunications window, due to its potential for strong gain across a broad bandwidth in the 2-micron regime [1]. However, the use of such technology in a silicon or planar platform has received much less attention [2,3]. Lack of on-chip lasers is an obstacle to progress in silicon photonics with much research focused on mounting processed III-V lasers, bonding gain material, or the deposition of gain material onto SOI wafers.
{"title":"Study of Tm-Doped Aluminosilicate Films for Integration of Lasers on a SOI Silicon Photonics Platform","authors":"C. Mitchell, Amy S. K. Tong, J. Wilkinson, J. Mackenzie","doi":"10.1109/CLEOE-EQEC.2019.8873332","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873332","url":null,"abstract":"Thulium-doped glass has recently been highlighted as a potential candidate for amplifiers in a new telecommunications window, due to its potential for strong gain across a broad bandwidth in the 2-micron regime [1]. However, the use of such technology in a silicon or planar platform has received much less attention [2,3]. Lack of on-chip lasers is an obstacle to progress in silicon photonics with much research focused on mounting processed III-V lasers, bonding gain material, or the deposition of gain material onto SOI wafers.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"69 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73048010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-24DOI: 10.1109/CLEOE-EQEC.2019.8871679
L. Carpenter, S. Berry, T. Legg, M. Farries, Chloe J. Watson, R. Bannerman, A. Gray, C. Holmes, J. Gates, Peter G. R. Smith, C. Gawith
Satellite based experiments require laser systems that are compact and efficient, which are robust against vibration, radiation and thermal cycling. Supported by Innovate UK's Quantum Technology ‘Cold Atom Space PAyload (CASPA)‘ project we have fabricated PPLN (Periodically Poled Lithium Niobate) ridge waveguides to act as efficient frequency converters for rubidium atom cooling via second harmonic generation (SHG) of telecoms lasers. CASPA is a technology demonstrator for magneto-optical cooling within a micro CubeSat laying the foundations for novel gravitometry and global positioning techniques [1].
{"title":"Zn:MgO:PPLN Waveguides for Rb Cold Atom Trap Based Quantum Gravitometry in a CubeSat","authors":"L. Carpenter, S. Berry, T. Legg, M. Farries, Chloe J. Watson, R. Bannerman, A. Gray, C. Holmes, J. Gates, Peter G. R. Smith, C. Gawith","doi":"10.1109/CLEOE-EQEC.2019.8871679","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871679","url":null,"abstract":"Satellite based experiments require laser systems that are compact and efficient, which are robust against vibration, radiation and thermal cycling. Supported by Innovate UK's Quantum Technology ‘Cold Atom Space PAyload (CASPA)‘ project we have fabricated PPLN (Periodically Poled Lithium Niobate) ridge waveguides to act as efficient frequency converters for rubidium atom cooling via second harmonic generation (SHG) of telecoms lasers. CASPA is a technology demonstrator for magneto-optical cooling within a micro CubeSat laying the foundations for novel gravitometry and global positioning techniques [1].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"2015 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86924577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-24DOI: 10.1109/CLEOE-EQEC.2019.8873125
R. Ismaeel, A. Beaton, A. Donko, W. Talataisong, Timothy Lee, T. Brotin, M. Beresna, M. Mowlem, G. Brambilla
We demonstrate a simple, cheap and compact all fibre methane sensor, with record sensitivity of 0.16 nm/ppm, composed of a D-shaped cross section optical fibre in between two fibre Bragg gratings. The flat side of the fibre is coated with a unique membrane used to solely detect methane, made by a gas permeable Teflon layer and doped with cryptophane-A molecules.
{"title":"High Sensitivity All-Fibre Methane Sensor with Gas Permeable Teflon/Cryptophane-A Membrane","authors":"R. Ismaeel, A. Beaton, A. Donko, W. Talataisong, Timothy Lee, T. Brotin, M. Beresna, M. Mowlem, G. Brambilla","doi":"10.1109/CLEOE-EQEC.2019.8873125","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873125","url":null,"abstract":"We demonstrate a simple, cheap and compact all fibre methane sensor, with record sensitivity of 0.16 nm/ppm, composed of a D-shaped cross section optical fibre in between two fibre Bragg gratings. The flat side of the fibre is coated with a unique membrane used to solely detect methane, made by a gas permeable Teflon layer and doped with cryptophane-A molecules.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"81 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90605910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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