Sub-wavelength cladding mid-infrared devices
Sub-wavelength cladding mid-infrared devices
Suspended structures enable low loss propagation in silicon waveguides for mid-infrared wavelengths by removing the lossy buried oxide (BOX) layer. We previously demonstrated suspended waveguides with a silicon core and a sub-wavelength grating (SWG) lateral cladding, which allows access to the buried oxide layer for under-etching with hydrofluoric acid. Here we show that bends, multimode interference couplers (MMI) and Mach-Zehnder interferometers (MZI) can be successfully implemented in this platform. Specifically, we report waveguides with propagation losses of 1.2 dB/cm, 90° bends with 0.03 dB/bend loss, compact MMI couplers with imbalances of 0.5 dB, and MZI structures with extinction ratios in excess of 24 dB.
183-184
Soler Penadés, J.
f18f3619-0d71-4547-95fd-dd38c37b7adb
Nedeljković, M.
b64e21c2-1b95-479d-a35c-3456dff8c796
Khokhar, A.Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Ortega-Moñux, A.
1ddc0007-ad93-424f-909e-1891ebd4973e
Wangüemert-Pérez, G.
46c2536e-bbf1-486c-b134-ebe9539eba02
Halir, R.
e3f8d90b-0067-4e1a-a6b1-0217c342dd55
Molina-Fernández, I.
9a123b9e-a12a-417e-b35d-f55d589af32b
Cheben, P.
9a2e25a5-6aa0-414e-a061-23416efedebc
26 October 2015
Soler Penadés, J.
f18f3619-0d71-4547-95fd-dd38c37b7adb
Nedeljković, M.
b64e21c2-1b95-479d-a35c-3456dff8c796
Khokhar, A.Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Ortega-Moñux, A.
1ddc0007-ad93-424f-909e-1891ebd4973e
Wangüemert-Pérez, G.
46c2536e-bbf1-486c-b134-ebe9539eba02
Halir, R.
e3f8d90b-0067-4e1a-a6b1-0217c342dd55
Molina-Fernández, I.
9a123b9e-a12a-417e-b35d-f55d589af32b
Cheben, P.
9a2e25a5-6aa0-414e-a061-23416efedebc
Soler Penadés, J., Nedeljković, M., Khokhar, A.Z., Mashanovich, G.Z., Ortega-Moñux, A., Wangüemert-Pérez, G., Halir, R., Molina-Fernández, I. and Cheben, P.
(2015)
Sub-wavelength cladding mid-infrared devices.
12th IEEE International Conference on Group IV Photonics (GFP), , Vancouver, Canada.
26 - 28 Aug 2015.
.
(doi:10.1109/Group4.2015.7305897).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Suspended structures enable low loss propagation in silicon waveguides for mid-infrared wavelengths by removing the lossy buried oxide (BOX) layer. We previously demonstrated suspended waveguides with a silicon core and a sub-wavelength grating (SWG) lateral cladding, which allows access to the buried oxide layer for under-etching with hydrofluoric acid. Here we show that bends, multimode interference couplers (MMI) and Mach-Zehnder interferometers (MZI) can be successfully implemented in this platform. Specifically, we report waveguides with propagation losses of 1.2 dB/cm, 90° bends with 0.03 dB/bend loss, compact MMI couplers with imbalances of 0.5 dB, and MZI structures with extinction ratios in excess of 24 dB.
This record has no associated files available for download.
More information
Published date: 26 October 2015
Venue - Dates:
12th IEEE International Conference on Group IV Photonics (GFP), , Vancouver, Canada, 2015-08-26 - 2015-08-28
Identifiers
Local EPrints ID: 442353
URI: http://eprints.soton.ac.uk/id/eprint/442353
PURE UUID: 1b217fc4-a75c-4b06-a21c-fca4f4b5a2d5
Catalogue record
Date deposited: 14 Jul 2020 16:31
Last modified: 29 Oct 2024 02:45
Export record
Altmetrics
Contributors
Author:
J. Soler Penadés
Author:
M. Nedeljković
Author:
A.Z. Khokhar
Author:
G.Z. Mashanovich
Author:
A. Ortega-Moñux
Author:
G. Wangüemert-Pérez
Author:
R. Halir
Author:
I. Molina-Fernández
Author:
P. Cheben
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics