Spatially resolved in-core temperature measurement in rare-earth doped fibers during pumping

Julia Fiebrandt; Martin Leich; Sonja Unger; Anka Schwuchow; Matthias Jäger; Manfred Rothhardt; Hartmut Bartelt

doi:10.1117/12.2037663

7 March 2014 Spatially resolved in-core temperature measurement in rare-earth doped fibers during pumping

Julia Fiebrandt, Martin Leich, Sonja Unger, Anka Schwuchow, Matthias Jäger, Manfred Rothhardt, Hartmut Bartelt

Proceedings Volume 8982, Optical Components and Materials XI; 898206 (2014) https://doi.org/10.1117/12.2037663
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We demonstrate a spatially distributed measurement technique to observe temperature changes along a pumped Ybdoped fiber. The technique is based on an array of fiber Bragg gratings acting as temperature sensor line. The Bragg gratings are inscribed directly into the actively doped fiber core using high intensity laser pulses and an interferometric setup. We studied the temperature evolution in differently doped fibers under pumping conditions and find different effects contributing to the observed temperature increase. To avoid an additional heating caused by pump-induced photodarkening, we measure the spatially resolved temperature profile during pumping along a photodarkening-reduced, cerium co-doped fiber.

Citation Download Citation

Julia Fiebrandt, Martin Leich, Sonja Unger, Anka Schwuchow, Matthias Jäger, Manfred Rothhardt, and Hartmut Bartelt "Spatially resolved in-core temperature measurement in rare-earth doped fibers during pumping", Proc. SPIE 8982, Optical Components and Materials XI, 898206 (7 March 2014); https://doi.org/10.1117/12.2037663

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