{"id":1251,"date":"2018-06-08T19:08:26","date_gmt":"2018-06-08T19:08:26","guid":{"rendered":"https:\/\/sites.ifi.unicamp.br\/lpd\/?p=1251"},"modified":"2019-05-10T19:35:36","modified_gmt":"2019-05-10T19:35:36","slug":"fourier-transform-spectrometer-on-silicon-with-thermo-optic-non-linearity-and-dispersion-correction","status":"publish","type":"post","link":"https:\/\/sites.ifi.unicamp.br\/lpd\/2018\/06\/08\/fourier-transform-spectrometer-on-silicon-with-thermo-optic-non-linearity-and-dispersion-correction\/","title":{"rendered":"Fourier transform spectrometer on silicon with thermo-optic non-linearity and dispersion correction"},"content":{"rendered":"

\"\"<\/p>\n

Congratulations to Mario! In a recent collaboration between prof. Newton Frateschi and Mario Souza with prof. Yeshaiahu Fainman from UCSD our team has published a new design for a fourier transform spectrometer.<\/p>\n

Media Highlights:<\/p>\n

Espectr\u00f4metro de infravermelho que cabe em um chip (Portuguese version)<\/a><\/p>\n

Infrared spectrometer on a chip (English version)<\/a> <\/p>\n

Un espectr\u00f3metro de infrarrojo que cabe en un chip (Spanish version) <\/a><\/p>\n

Check out the full paper at:<\/p>\n

Mario C M M Souza, Andrew Grieco, Newton C Frateschi, Yeshaiahu Fainman: <\/span> Fourier transform spectrometer on silicon with thermo-optic non-linearity and dispersion correction<\/a><\/span>. In: <\/span>NATURE COMMUNICATIONS, <\/span>vol. 9, <\/span>2018<\/span>, ISSN: 2041-1723<\/span>.<\/span><\/div><\/p>\n

Abstract: <\/strong><\/p>\n

\n
\n
\n
\n

Miniaturized integrated spectrometers will have unprecedented impact on applications ran- ging from unmanned aerial vehicles to mobile phones, and silicon photonics promises to deliver compact, cost-effective devices. Mirroring its ubiquitous free-space counterpart, a silicon photonics-based Fourier transform spectrometer (Si-FTS) can bring broadband operation and fine resolution to the chip scale. Here we present the modeling and experi- mental demonstration of a thermally tuned Si-FTS accounting for dispersion, thermo-optic non-linearity, and thermal expansion. We show how these effects modify the relation between the spectrum and interferogram of a light source and we develop a quantitative correction procedure through calibration with a tunable laser. We retrieve a broadband spectrum (7 THz around 193.4 THz with 0.38-THz resolution consuming 2.5 W per heater) and demonstrate the Si-FTS resilience to fabrication variations\u2014a major advantage for large- scale manufacturing. Providing design flexibility and robustness, the Si-FTS is poised to become a fundamental building block for on-chip spectroscopy.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Congratulations to Mario! In a recent collaboration between prof. Newton Frateschi and Mario Souza with prof. Yeshaiahu Fainman from UCSD our team has published a new design for a fourier transform spectrometer. Media Highlights: Espectr\u00f4metro de infravermelho que cabe em um chip (Portuguese version) Infrared spectrometer on a chip (English version)  Un espectr\u00f3metro de infrarrojo … <\/p>\n

Continue reading<\/a><\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1251","post","type-post","status-publish","format-standard","hentry","category-blog","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/posts\/1251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/comments?post=1251"}],"version-history":[{"count":5,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/posts\/1251\/revisions"}],"predecessor-version":[{"id":1275,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/posts\/1251\/revisions\/1275"}],"wp:attachment":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/media?parent=1251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/categories?post=1251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpd\/wp-json\/wp\/v2\/tags?post=1251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}