The University of Southampton
University of Southampton Institutional Repository

Impact of waveguide cross section on nonlinear impairments in integrated optical filters for WDM communication systems

Impact of waveguide cross section on nonlinear impairments in integrated optical filters for WDM communication systems
Impact of waveguide cross section on nonlinear impairments in integrated optical filters for WDM communication systems
Integrated optical chips enabling the realization of low-cost optical network units (ONU) is of great interest both for data centre solutions and for passive optical networks. In particular, in the frame of passive optical networks an interesting possibility is constituted by the presence, in the ONU of a Wavelength Division Multiplexing (WDM) filter [1] One of the most popular solution is based on a micro-ring resonators. The filter doesn’t introduce any relevant impairment in the downstream signal, as the optical power reaching the ONU, at the resonant wavelength, is generally so small that nonlinear effects can be generally neglected. Nevertheless, if the upstream signal, that generally has a much higher power, has to pass through the same resonator can undergo nonlinear effects like two-photon absorption (TPA), free-carriers absorption (FCA), and free-carrier dispersion (FCD) [2]. In this abstract we show the results of an experimental analysis we carried out in order to investigate the impact of optical nonlinear effects in WDM integrated micro-filters exploiting different designs (double- and triple- resonators structures, racetracks, rings, curved coupling regions, etc.) and exhibiting significantly different waveguide cross-sections (from 500 × 220 nm to 825 × 100 nm). The nonlinear behaviour evaluation has been carried out by performing two different sets of experiments. In the first one the amplified spontaneous emission emitted by an Er-doped fiber amplifier was filtered (by using a tunable filter with 5 nm band-width) and then amplified and then input by grating-assisted coupling to the filtering structures. Changes of filter transfer function were observed as a function of the input power. Conversely, in the second setup a narrowband CW-laser was used, and the behaviour of output power as a function of the input power was recorded.
Lacava, Cosimo
a0a31a27-23ac-4a73-8bb4-2f02368fb8bd
Marchetti, Riccardo
dbf5283a-83f6-4f88-a044-8fcfc8dc7ac0
Giuliani, Guido
5eb1e425-f69e-44c3-9be7-1582bbc5908f
Fournier, Maryse
034e6c4b-9558-4205-9115-f571c4f6531d
Menezo, Sylvie
6cacce21-ce1b-4540-af17-0a1802d2c094
Messaoudene, Sylvie
0a43a7ed-f349-44d1-854b-6e2a0463bbe9
Minzioni, Paolo
b3c7ad72-d91c-42cf-be38-d949d6d2e264
Lacava, Cosimo
a0a31a27-23ac-4a73-8bb4-2f02368fb8bd
Marchetti, Riccardo
dbf5283a-83f6-4f88-a044-8fcfc8dc7ac0
Giuliani, Guido
5eb1e425-f69e-44c3-9be7-1582bbc5908f
Fournier, Maryse
034e6c4b-9558-4205-9115-f571c4f6531d
Menezo, Sylvie
6cacce21-ce1b-4540-af17-0a1802d2c094
Messaoudene, Sylvie
0a43a7ed-f349-44d1-854b-6e2a0463bbe9
Minzioni, Paolo
b3c7ad72-d91c-42cf-be38-d949d6d2e264

Lacava, Cosimo, Marchetti, Riccardo, Giuliani, Guido, Fournier, Maryse, Menezo, Sylvie, Messaoudene, Sylvie and Minzioni, Paolo (2015) Impact of waveguide cross section on nonlinear impairments in integrated optical filters for WDM communication systems. CLEO Europe, Munich, Germany. 21 - 25 Jun 2015. 1 pp .

Record type: Conference or Workshop Item (Poster)

Abstract

Integrated optical chips enabling the realization of low-cost optical network units (ONU) is of great interest both for data centre solutions and for passive optical networks. In particular, in the frame of passive optical networks an interesting possibility is constituted by the presence, in the ONU of a Wavelength Division Multiplexing (WDM) filter [1] One of the most popular solution is based on a micro-ring resonators. The filter doesn’t introduce any relevant impairment in the downstream signal, as the optical power reaching the ONU, at the resonant wavelength, is generally so small that nonlinear effects can be generally neglected. Nevertheless, if the upstream signal, that generally has a much higher power, has to pass through the same resonator can undergo nonlinear effects like two-photon absorption (TPA), free-carriers absorption (FCA), and free-carrier dispersion (FCD) [2]. In this abstract we show the results of an experimental analysis we carried out in order to investigate the impact of optical nonlinear effects in WDM integrated micro-filters exploiting different designs (double- and triple- resonators structures, racetracks, rings, curved coupling regions, etc.) and exhibiting significantly different waveguide cross-sections (from 500 × 220 nm to 825 × 100 nm). The nonlinear behaviour evaluation has been carried out by performing two different sets of experiments. In the first one the amplified spontaneous emission emitted by an Er-doped fiber amplifier was filtered (by using a tunable filter with 5 nm band-width) and then amplified and then input by grating-assisted coupling to the filtering structures. Changes of filter transfer function were observed as a function of the input power. Conversely, in the second setup a narrowband CW-laser was used, and the behaviour of output power as a function of the input power was recorded.

Text
CLEO final.pdf - Author's Original
Download (449kB)

More information

Accepted/In Press date: 23 March 2015
Published date: June 2015
Venue - Dates: CLEO Europe, Munich, Germany, 2015-06-21 - 2015-06-25
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378238
URI: https://eprints.soton.ac.uk/id/eprint/378238
PURE UUID: 5fe660a3-6a0d-4cf7-a23b-d45b8a1163e9
ORCID for Cosimo Lacava: ORCID iD orcid.org/0000-0002-9950-8642

Catalogue record

Date deposited: 13 Jul 2015 09:03
Last modified: 20 Nov 2018 01:29

Export record

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

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×