{"id":9183,"date":"2021-05-27T08:48:52","date_gmt":"2021-05-27T08:48:52","guid":{"rendered":"https:\/\/www.kolabtree.com\/blog\/?p=9183"},"modified":"2021-09-30T12:07:13","modified_gmt":"2021-09-30T12:07:13","slug":"bikash-kumar-das-vector-vortex-beam-scattering-communication-application","status":"publish","type":"post","link":"https:\/\/www.kolabtree.com\/blog\/pt\/bikash-kumar-das-vector-vortex-beam-scattering-communication-application\/","title":{"rendered":"Bikash Kumar Das: Vector vortex beam e sua dispers\u00e3o para aplica\u00e7\u00e3o em comunica\u00e7\u00e3o"},"content":{"rendered":"

Bikash Kumar Das<\/em><\/a> \u00e9 especialista em ci\u00eancia dos materiais e \u00f3ptica cl\u00e1ssica, e oferece servi\u00e7os freelance na Kolabtree.<\/p>\n

Sobre o projeto<\/strong><\/p>\n

\"\"<\/p>\n

Atualmente, estou trabalhando em um projeto intitulado \"Vector vortex beam and their scattering for communication application\". Em nosso laborat\u00f3rio de \u00d3ptica, estamos concebendo novas ferramentas e t\u00e9cnicas para gerar feixe de v\u00f3rtice vectorial. Mais recentemente, propus uma t\u00e9cnica onde o uso de um polarizador laser glan (GLP), uma placa q e um modulador de luz espacial sens\u00edvel \u00e0 polariza\u00e7\u00e3o (SLM) gera um feixe de v\u00f3rtice vetorial que est\u00e1 tendo uma fase indefinida no centro e tamb\u00e9m um perfil de polariza\u00e7\u00e3o n\u00e3o uniforme. Utilizamos este feixe para estabelecer uma comunica\u00e7\u00e3o segura entre duas extremidades (os dados ser\u00e3o criptografados com seguran\u00e7a) e codificamos as informa\u00e7\u00f5es \u00f3pticas. Al\u00e9m do feixe de v\u00f3rtice Vetor, tamb\u00e9m geramos feixes de v\u00f3rtice \u00f3ptico perfeito (POV) em nosso laborat\u00f3rio usando um SLM (sendo operado somente em modo fase), um axicon e uma lente (realiza a transforma\u00e7\u00e3o \u00f3ptica de Fourier dos feixes de Bessel Gauss para gerar o feixe POV). Al\u00e9m disso, espalhamos esses feixes atrav\u00e9s de uma placa de vidro mo\u00eddo (GGP), ap\u00f3s o que foram gerados padr\u00f5es de manchas (um fino padr\u00e3o granular aleat\u00f3rio de luz que s\u00e3o geradas devido \u00e0 interfer\u00eancia de muitas frentes de onda dispersas das n\u00e3o homog\u00eaneas presentes na superf\u00edcie de um GGP). Em seguida, pegamos a correla\u00e7\u00e3o (auto e correla\u00e7\u00e3o cruzada) de dois padr\u00f5es de manchas e usamos esta correla\u00e7\u00e3o para estabelecer a comunica\u00e7\u00e3o cl\u00e1ssica.\u00a0<\/span><\/p>\n

\"\"<\/a> \"\" \"\" \"\"\"\"<\/a><\/p>\n

Sobre o autor, Bikash Kumar Das\u00a0<\/strong><\/p>\n

I work as a pesquisa<\/a> fellow of physics in the project titled \u201cVector vortex beam and their scattering for communication application\u201d funded by Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Govt.of India. <\/span><\/p>\n

Anteriormente, eu havia completado com sucesso dois projetos intitulados \"Crescimento de pel\u00edcula fina de ZnO sobre substrato de sil\u00edcio e vidro pela t\u00e9cnica de deposi\u00e7\u00e3o a laser pulsado\" no Instituto de F\u00edsica, DAE, Governo da \u00cdndia como bolsista do Programa de Visitas de Estudante de Ver\u00e3o (SSVP) financiado pelo Departamento de Energia At\u00f4mica (DAE) e \"Efeito do Gd, Ca doping na estrutura, magn\u00e9tico e transporte estudado de SrMnO<\/span>3<\/span> Perovskite\" na Universidade Utkal. Al\u00e9m disso, fui o vencedor da medalha de ouro do Chanceler (Governador de Odisha) por ter obtido as notas mais altas em minha p\u00f3s-gradua\u00e7\u00e3o na Universidade Utkal e tamb\u00e9m recebedor de muitas bolsas de estudo, bolsas de estudo e pr\u00eamios de prest\u00edgio, tais como Bolsa de Estudo UGC (2016-17), Bolsa de Estudo do Instituto de Matem\u00e1tica e Aplica\u00e7\u00e3o (AIR-02), Bolsa de Estudo de M\u00e9rito Khirgovind, Teste de Aptid\u00e3o para Gradua\u00e7\u00e3o em Engenharia (GATE), Teste de Triagem de Entrada Conjunta (JEST) etc. <\/span><\/p>\n

Sou membro da American Physical Society (APS), American Chemical Society (ACS), Optical Society of America (OSA), Asia Society of Researchers (ASR), Institute of Corrosion, e Cognitive Science Society (CSS).<\/span><\/p>\n

Entre em contato comigo em Kolabtree aqui.<\/strong><\/a><\/p>","protected":false},"excerpt":{"rendered":"

Bikash Kumar Das \u00e9 especialista em ci\u00eancia dos materiais e \u00f3ptica cl\u00e1ssica, e oferece servi\u00e7os freelance na Kolabtree. Sobre o projeto Atualmente, estou trabalhando em um projeto intitulado \"Vector vortex beam and their scattering for communication application\". Em nosso laborat\u00f3rio de \u00d3ptica, estamos elaborando novas ferramentas e t\u00e9cnicas para gerar feixe de v\u00f3rtice vectorial. Mais recentemente,<\/p>\n

Leia mais<\/a><\/div>","protected":false},"author":12,"featured_media":9190,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[662,661],"tags":[],"acf":[],"yoast_head":"\nBikash Kumar Das: Vector vortex beam and their scattering for communication application - The Kolabtree Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kolabtree.com\/blog\/pt\/bikash-kumar-das-vector-vortex-beam-scattering-communication-application\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bikash Kumar Das: Vector vortex beam and their scattering for communication application\" \/>\n<meta property=\"og:description\" content=\"Bikash Kumar Das is an expert in material science and classical optics, and offers freelance services at Kolabtree. 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