Two regimes of grating regeneration in hydrogen loaded photosensitive fiber

Leonhard Polz; Quang Nguyen; Hartmut Bartelt; Johannes Roths

doi:10.1117/12.2025857

20 May 2013 Two regimes of grating regeneration in hydrogen loaded photosensitive fiber

Leonhard Polz, Quang Nguyen, Hartmut Bartelt, Johannes Roths

Author Affiliations +

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879420 (2013) https://doi.org/10.1117/12.2025857
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

In a highly Ge doped photosensitive fiber, co doped with phosphorus and fluorine and with a doped inner cladding, we observed, during annealing experiments, an anomalous variation of the FBG strength as a function of temperature and time. This characteristic only occurred when the fiber had been loaded with hydrogen. During a stepwise temperature increase from room temperature to 1200°C, the gratings showed, after an initial thermal decay, in two distinct temperature ranges a significant increase in reflectivity with time. One range with an increase in reflectivity was found between 850°C and 1000°C. The behaviors of the FBGs in this range were very similar to that known from chemical composition or regenerated gratings. Another temperature range with increasing reflectivity was found between 500°C and 700°C, followed by a strong decrease in reflectivity at temperatures between 750°C to 800°C. Both regimes of regeneration might be associated with changes in the core and doped inner cladding of this type of fiber.

Citation Download Citation

Leonhard Polz, Leonhard Polz, Quang Nguyen, Quang Nguyen, Hartmut Bartelt, Hartmut Bartelt, Johannes Roths, Johannes Roths, } "Two regimes of grating regeneration in hydrogen loaded photosensitive fiber", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879420 (20 May 2013); doi: 10.1117/12.2025857; https://doi.org/10.1117/12.2025857

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years