Dr. Cesare Chiccoli Profile

Dr. Cesare Chiccoli

at Istituto Nazionale di Fisica Nucleare

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 29 August 2019 Paper

Optical waveguides and tunable devices made of a liquid crystal core in PDMS channels

Antonio d'Alessandro, Luca Civita, Rita Asquini, Cesare Chiccoli, Paolo Pasini

Proceedings Volume 11092, 110920W (2019) https://doi.org/10.1117/12.2530293

KEYWORDS: Brain-machine interfaces

Read Abstract +

We present photonic devices based on a nematic liquid crystals (NLC) infiltrated in polydimethylsiloxane (PDMS) channels, named LC:PDMS waveguides, for flexible photonic integrated circuits. A simulation study of the NLC ordering and possible defects under an electric field between coplanar gold electrodes has been carried out by a Monte Carlo approach. The minimization of the free energy in the NLC core waveguides computed by means of finite elements allows to derive the refractive index profile, which is implemented in a BPM algorithm to design a large variety of switchable and tuneable photonic devices. In particular we report the design of two photonic devices based on LC:PDMS waveguide technology: a 2x2 optical switch made of a zero-gap electro-optical controlled directional coupler and a multimodal interferometer (MMI) acting as an optical multi/demultiplexer. The electro-optical controlled directional coupler is able to switch light from one waveguide to a second one with an extinction ratio of 16 dB by applying a voltage of just 1.62 V to coplanar gold electrodes deposited on PDMS by electroplating technique. Light remains in the same waveguide with an extinction ratio of about 18 dB with a voltage of 1.76 V. An MMI has been also designed to demultiplex wavelengths at 980 nm and 1550 nm in two output waveguides with an extinction ratio better than 11 dB by applying about 7 V. Main advantage of these devices is the low driving voltage due to the combination of electro-optic effect of the NLC with an optimized design.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years