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Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding

Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding
Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding
We report on a novel organic/inorganic hybrid waveguide approach, which is composed of a cladding of extremely low refractive index oxidized porous silicon formed on a bulk silicon substrate and of it, a polymeric (polymethylmethacrylate) core doped with a visible laser dye (Nile-Blue) was deposited by spin coating. The waveguiding properties of the structures have been characterised by means of the m-line technique, demonstrating that the use of oxidized porous silicon as a cladding can considerably improve the mode confinement factor of single-mode waveguides. The low refractive index achievable in the cladding (n=1.16) allows forming waveguides with a low index polymer cores. Variable stripe length (VSL) measurements have been also performed in order to characterise the amplification properties of the waveguides. We demonstrate a clear transition from losses to gain at 694nm with a pump threshold of 28mJ/cm2. Values of net optical gain up to 104dB/cm have been measured at this wavelength.
Navarro-Urrios, Daniel
3a5f28c0-b2ba-4eff-8a64-d257ef2c198c
Ghulinyan, Mher
81344f5a-1312-4007-ba35-bcb7d161be7c
Bettotti, Paolo
1c32f61c-7775-4331-89e3-0b5f66fb6481
Capuj, Néstor
73e065ec-2fbc-48fb-aff0-71c63c0ed4bf
Oton, Claudio J.
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Lahoz, Fernando
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Martin, Inocencio R.
f463b213-1265-47e3-a249-1fcc354e1200
Pavesi, L.
b8e21823-8e24-46bc-a740-88f10f4cae5b
Navarro-Urrios, Daniel
3a5f28c0-b2ba-4eff-8a64-d257ef2c198c
Ghulinyan, Mher
81344f5a-1312-4007-ba35-bcb7d161be7c
Bettotti, Paolo
1c32f61c-7775-4331-89e3-0b5f66fb6481
Capuj, Néstor
73e065ec-2fbc-48fb-aff0-71c63c0ed4bf
Oton, Claudio J.
7e0803bc-34e4-4c6d-8f27-1204ef1775da
Lahoz, Fernando
6f99ff10-63e7-4222-8814-d7064381800f
Martin, Inocencio R.
f463b213-1265-47e3-a249-1fcc354e1200
Pavesi, L.
b8e21823-8e24-46bc-a740-88f10f4cae5b

Navarro-Urrios, Daniel, Ghulinyan, Mher, Bettotti, Paolo, Capuj, Néstor, Oton, Claudio J., Lahoz, Fernando, Martin, Inocencio R. and Pavesi, L. (2007) Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding. Microtechnologies for the New Millennium: SPIE 6593, , Maspalomas, Gran Canaria, Spain. 02 - 04 May 2007. 8 pp . (doi:10.1117/12.721400).

Record type: Conference or Workshop Item (Paper)

Abstract

We report on a novel organic/inorganic hybrid waveguide approach, which is composed of a cladding of extremely low refractive index oxidized porous silicon formed on a bulk silicon substrate and of it, a polymeric (polymethylmethacrylate) core doped with a visible laser dye (Nile-Blue) was deposited by spin coating. The waveguiding properties of the structures have been characterised by means of the m-line technique, demonstrating that the use of oxidized porous silicon as a cladding can considerably improve the mode confinement factor of single-mode waveguides. The low refractive index achievable in the cladding (n=1.16) allows forming waveguides with a low index polymer cores. Variable stripe length (VSL) measurements have been also performed in order to characterise the amplification properties of the waveguides. We demonstrate a clear transition from losses to gain at 694nm with a pump threshold of 28mJ/cm2. Values of net optical gain up to 104dB/cm have been measured at this wavelength.

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More information

Published date: 12 June 2007
Venue - Dates: Microtechnologies for the New Millennium: SPIE 6593, , Maspalomas, Gran Canaria, Spain, 2007-05-02 - 2007-05-04

Identifiers

Local EPrints ID: 443340
URI: http://eprints.soton.ac.uk/id/eprint/443340
PURE UUID: 3b86762f-250d-485b-9eb2-1d513e5ba0f6

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Date deposited: 20 Aug 2020 16:36
Last modified: 08 Jan 2022 13:47

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Contributors

Author: Daniel Navarro-Urrios
Author: Mher Ghulinyan
Author: Paolo Bettotti
Author: Néstor Capuj
Author: Claudio J. Oton
Author: Fernando Lahoz
Author: Inocencio R. Martin
Author: L. Pavesi

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