Evanescent-wave LPFG in D-fiber by periodically patterned overlay

G. Quero; A. Crescitelli; D. Paladino; M. Consales; A. Buosciolo; M. Giordano; A. Cusano

doi:10.1117/12.866335

8 September 2010 Evanescent-wave LPFG in D-fiber by periodically patterned overlay

G. Quero, A. Crescitelli, D. Paladino, M. Consales, A. Buosciolo, M. Giordano, A. Cusano

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76531G (2010) https://doi.org/10.1117/12.866335
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

Long-period fiber gratings (LPFGs) represent an attractive fiber grating-based technological platform because of their selective spectral features together with the intrinsic sensitivity to surrounding refractive index (SRI). Unfortunately, their main limitation relies on the necessity to opportunely coat the glass substrate when sensitivity enhancement and/or specific functionalization are required. Here, we investigate the possibility to realize a self-functionalized and high-sensitivity LPFG by evanescent-wave interaction of the propagating light with a periodically patterned overlay. In particular, a D-shaped optical fiber is considered because of its peculiar geometrical features. First chemical etching is used to allow the evanescent-wave interaction of the propagating light with the surroundings with the desired sensitivity. Successively a uniform atactic polystyrene overlay is deposited onto the flat surface of the structure by dip-coating technique. Finally the overlay is opportunely patterned by laser-micromachining techniques in order to create a LPFG-like structure. The reported results demonstrate the spectral features of the realized device and confirm the LPFG-like behavior with high SRI-sensitivity. The flexibility of the adopted fabrication method could allow the realization of innovative LPFGs to be adopted for a multitude of sensing applications, depending on the nature of the material deposited onto the flat surface of the etched D-fiber.

Citation Download Citation

G. Quero, A. Crescitelli, D. Paladino, M. Consales, A. Buosciolo, M. Giordano, and A. Cusano "Evanescent-wave LPFG in D-fiber by periodically patterned overlay", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76531G (8 September 2010); https://doi.org/10.1117/12.866335

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Overlay metrology

Etching

Cladding

Refractive index

Signal attenuation

Wet etching

Optical fibers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years