RT Journal Article
T1 Mid-infrared suspended waveguide platform and building blocks
A1 Sanchez-Postigo, Alejandro
A1 Wanguemert-Perez, Juan Gonzalo
A1 Penades, Jordi Soler
A1 Ortega-Monux, Alejandro
A1 Nedeljkovic, Milos
A1 Halir, Robert
A1 Mimun, Faysal El Mokhtari
A1 Cheng, Yolanda Xu
A1 Qu, Zhibo
A1 Khokhar, Ali Z.
A1 Osman, Ahmed
A1 Cao, Wei
A1 Littlejohns, Callum G.
A1 Cheben, Pavel
A1 Mashanovich, Goran Z.
A1 Molina-Fernandez, Inigo
K1 Subwavelength structures
K1 Grating coupler
K1 Silicon
K1 Principles
K1 Photonics
K1 Devices
AB In this work, the authors present their recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguides with subwavelength metamaterial cladding. The platform has some intrinsic advantages, which make it a very promising candidate for sensing applications in the molecular fingerprint region. Specifically, it can cover the full transparency window of silicon (up to a wavelength of 8 mu m), only requires one lithographic etch-step and can be designed for strong light-matter interaction. Design rules, practical aspects of the fabrication process and experimental results of a complete set of elemental building blocks operating at two very different wavelengths, 3.8 and 7.7 mu m, are discussed. Propagation losses as low as 0.82 dB/cm at lambda(0) = 3.8 mu m and 3.1 dB/cm at lambda(0) = 7.7 mu m are attained for the interconnecting waveguides.
PB Inst engineering technology-iet
SN 1751-8768
YR 2019
FD 2019-04-01
LK http://hdl.handle.net/10668/18922
UL http://hdl.handle.net/10668/18922
LA en
DS RISalud
RD Apr 17, 2025