Zobrazeno 1 - 10
of 29
pro vyhledávání: '"R. Beravat"'
Autor:
P. Roth, Y. Chen, M. C. Günendi, R. Beravat, N. N. Edavalath, M. H. Frosz, G. Ahmed, G. K. L. Wong, P. St.J. Russell
Publikováno v:
Optica
Recent work has revealed that the dispersion relation, given in Optica 5, 1315 (2018)10.1364/OPTICA.5.001315, for helical Bloch modes in a ring of capillaries surrounding a central hollow core, is incorrect. Here we correct this error and provide a r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28e7109dd529cae6d327947259882990
https://doi.org/10.1364/optica.471646
https://doi.org/10.1364/optica.471646
Autor:
Gordon K. L. Wong, Rafal Sopalla, Michael H. Frosz, R. Beravat, P. St. J. Russell, C. M. Harvey, Paul Roth
Publikováno v:
Scopus-Elsevier
We present a technique for measuring the phase and amplitude distribution of the light guided in a twisted coreless photonic crystal fiber (or indeed any fiber), enabling full characterization of the orbital angular momentum states.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5afd7bfc36cd5136964dbd9611703712
https://doi.org/10.1364/cleo_si.2018.sw3k.2
https://doi.org/10.1364/cleo_si.2018.sw3k.2
Autor:
Jean-Michel Ménard, N. N. Edavalath, Gordon K. L. Wong, P. St. J. Russell, Michael H. Frosz, M. C. Günendi, R. Beravat
Publikováno v:
Optics letters. 42(11)
A hollow-core single-ring photonic crystal fiber (SR-PCF) consists of a ring of capillaries arranged around a central hollow core. Spinning the preform during drawing introduces a continuous helical twist, offering a novel means of controlling the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8429ccd2855c1a5197713712db9c2410
https://pubmed.ncbi.nlm.nih.gov/28569848
https://pubmed.ncbi.nlm.nih.gov/28569848
Autor:
N. N. Edavalath, Gordon K. L. Wong, Michael H. Frosz, R. Beravat, P. St. J. Russell, M. C. Günendi
Publikováno v:
Scopus-Elsevier
Recent developments in single-ring hollow-core photonic crystal fibre (SR-PCF) have made possible robust single-mode guidance over a broad bandwidth [1]—an important attribute in many applications, for example high power delivery of laser light and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfc9f66a6ba80379289e08c7e965b20f
https://doi.org/10.1109/cleoe-eqec.2017.8087037
https://doi.org/10.1109/cleoe-eqec.2017.8087037
Publikováno v:
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
Recent theoretical and experimental work on helically twisted photonic crystal fibres (PCFs) is reviewed. Helical Bloch theory is introduced, including a new formalism based on the tight-binding approximation. It is used to explore and explain a vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f214dd18a1ad4104e04bee395efa3f2b
http://europepmc.org/articles/PMC5247484
http://europepmc.org/articles/PMC5247484
Publikováno v:
Science Advances
Twisting the periodic “space” within a coreless photonic crystal fiber creates gravitation-like forces that trap light.
A century ago, Einstein proposed that gravitational forces were the result of the curvature of space-time and predicted t
A century ago, Einstein proposed that gravitational forces were the result of the curvature of space-time and predicted t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90f05e83db5664e4753ab74ed3eb6481
http://europepmc.org/articles/PMC5262443
http://europepmc.org/articles/PMC5262443
Publikováno v:
Optics letters. 41(7)
Continuously twisted solid-core photonic crystal fiber (PCF) exhibits pure circular birefringence (optical activity), making it ideal for current sensors based on the Faraday effect. By numerical analysis, we identify the PCF geometry for which the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e3d5c58c62115fdaedde3de42808c33
https://pubmed.ncbi.nlm.nih.gov/27192315
https://pubmed.ncbi.nlm.nih.gov/27192315
Autor:
Gordon K. L. Wong, P. Uebel, M. C. Günendi, Philip St. J. Russell, Michael H. Frosz, N. N. Edavalath, R. Beravat
Publikováno v:
Conference on Lasers and Electro-Optics.
In straight single-ring hollow-core PCFs, dramatic higher-order-mode suppression occurs for a strict geometrical condition. Twisting permits this condition to be relaxed, reducing fabrication tolerances. The twisted fiber also exhibits weak circular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ab68c217579702d6bd796b33211de1c
https://doi.org/10.1364/cleo_si.2016.stu4p.6
https://doi.org/10.1364/cleo_si.2016.stu4p.6
Autor:
Yue-Yue Chen, G. Ahmed, Paul Roth, Michael H. Frosz, P. St. J. Russell, N. N. Edavalath, Gordon K. L. Wong, R. Beravat, M. C. Günendi
Publikováno v:
Optica. 5:1315
We report a series of experimental, analytical, and numerical studies demonstrating strong circular dichroism for the HE11-like core mode in helically twisted hollow-core single-ring photonic crystal fiber (SR-PCF), formed by spinning the preform dur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3590c2dab1613321631bafa0261e92ca
https://doi.org/10.1364/optica.5.001315
https://doi.org/10.1364/optica.5.001315
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