Femtosecond laser micro/nano-machining of silica glass planar substrates for the production of Bragg gratings

M. Tunon de Lara; K. Chah; L. Amez-Droz; P. Lambert; C. Collette; C. Caucheteur

doi:10.1117/12.2678419

23 May 2023 Femtosecond laser micro/nano-machining of silica glass planar substrates for the production of Bragg gratings

M. Tunon de Lara, K. Chah, L. Amez-Droz, P. Lambert, C. Collette, C. Caucheteur

Author Affiliations +

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126433D (2023) https://doi.org/10.1117/12.2678419
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

Femtosecond laser pulses are increasingly utilized for the micro/nano-machining of a wide range of materials. They have been effectively employed in the production of fiber Bragg gratings (FBGs) through the implementation of point-by-point, line-by-line, and plane-by-plane processes. This study reports on the use of such lasers for the manufacture of Bragg gratings in pure fused silica planar substrates. In particular, the commercial system known as FEMTOprint was employed. This machine enabled the efficient production of Bragg gratings from bulk silica through several steps. Initially, a waveguide was engraved into the glass substrate through precise control of laser pulses and paths. Subsequently, an access point was created at one edge of the substrate to facilitate the easy connection of a standard optical fiber for light injection and collection. This was accomplished through the use of femtosecond laser pulses, followed by an etching process utilizing KOH to selectively ablate some material and create the necessary open spaces in the substrate. Finally, a third femtosecond laser process was utilized to inscribe a Bragg grating within the waveguide. The reflected amplitude spectrum of the grating was characterized with an FBG interrogator, and the obtained experimental results will be presented in this paper.

Citation Download Citation

M. Tunon de Lara, K. Chah, L. Amez-Droz, P. Lambert, C. Collette, and C. Caucheteur "Femtosecond laser micro/nano-machining of silica glass planar substrates for the production of Bragg gratings", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126433D (23 May 2023); https://doi.org/10.1117/12.2678419

ACCESS THE FULL ARTICLE

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