Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Utsav D. Dave"'
Autor:
Janderson R. Rodrigues, Utsav D. Dave, Aseema Mohanty, Xingchen Ji, Ipshita Datta, Shriddha Chaitanya, Euijae Shim, Ricardo Gutierrez-Jauregui, Vilson R. Almeida, Ana Asenjo-Garcia, Michal Lipson
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract Total internal reflection (TIR) governs the guiding mechanisms of almost all dielectric waveguides and therefore constrains most of the light in the material with the highest refractive index. The few options available to access the properti
Externí odkaz:
https://doaj.org/article/665cf3dbbc7b47fe9e970e670d49305d
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate the loading of very short optical pulses into a high-Q cavity with linewidth much narrower than the pulse frequency envelope. We show that loading into the cavity is significantly enhanced if the pulse is combined with a cw-field, thus
Autor:
Janderson R. Rodrigues, Gaurang R. Bhatt, Ipshita Datta, Utsav D. Dave, Shriddha Chaitanya, Euijae Shim, Michal Lipson
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate SiN-based passive waveguides with ultra-low thermo-optic effect, based on a novel waveguiding mechanism that confines light in the lower index of refraction. We demonstrate broadband operation over at least 200nm, with less than 0.01%
Autor:
Alexander L. Gaeta, Tong Lin, Utsav D. Dave, Michal Lipson, Xingchen Ji, Andres Gil Molina, Jakob Hinney
Publikováno v:
Conference on Lasers and Electro-Optics.
We show tuning of the cavity-bus coupling rate by more than 160% by imparting a nonlinear differential parametric gain between the clockwise and counterclockwise propagating modes.
Publikováno v:
Scopus-Elsevier
We demonstrate experimentally a mode converter between a silicon waveguide and a few-mode fiber compatible with mode-division multiplexing. We convert 4 TE modes of a silicon waveguide to the LP01,x, LP01,y, LP11a,x, LP11a,y modes of the fiber.
Publikováno v:
Conference on Lasers and Electro-Optics.
We present an inverse design method for achieving unprecedented performance and ultra wide bandwidth based on direct adaptive refinement of the device geometry. We experimentally demonstrate a 90/10 splitter with more than 200 nm bandwidth.
Autor:
Xingchen Ji, Alexander L. Gaeta, Chaitanya Joshi, Mateus Corato-Zanarella, Jae K. Jang, Utsav D. Dave, Michal Lipson
Low propagation loss in high confinement waveguides is critical for chip-based nonlinear photonics applications. Sophisticated fabrication processes which yield sub-nm roughness are generally needed to reduce scattering points at the waveguide interf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b8732a510c9ba39360e1d528a31e685
http://arxiv.org/abs/2012.04191
http://arxiv.org/abs/2012.04191
Autor:
Gunther Roelkens, Fabrice Raineri, François Leo, Bart Kuyken, Utsav D. Dave, Charles Ciret, Simon-Pierre Gorza, Alfredo De Rossi, Maximilien Billet, Nicolas Poulvellarie, Koen Alexander, Carlos Mas Arabí, Sylvain Combrié
Publikováno v:
Physical Review A, 102 (2
Physical Review A
PHYSICAL REVIEW A
Physical Review A
PHYSICAL REVIEW A
We investigate second-harmonic generation in III-V semiconductor wire waveguides aligned with a crystallographic axis. In this direction, because of the single nonzero tensor element coming from the zinc-blende symmetry of III-V semiconductors, only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e43b430a255b80ff68c35254c9a563b
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313904
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313904
Publikováno v:
Conference on Lasers and Electro-Optics.
We show a mode converter between silicon and polymer waveguides compatible with few-mode fibers for mode-division multiplexing. We convert 4 TE modes of a silicon waveguide to the TE11, TMii, TE21, TM21 modes of a polymer waveguide.
Autor:
Mateus Corato-Zanarella, Utsav D. Dave, Xingchen Ji, Aseema Mohanty, Michal Lipson, Alexander L. Gaeta
Publikováno v:
Conference on Lasers and Electro-Optics.
We overcome the trade-off between loss and dispersion in high Q microresonators by engineering their cross-section along the length. We show high quality factor of 8.0 million, corresponding to a propagation loss of 4.7 dB/m.