Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm
Optical fiber characterization using whispering gallery mode resonances of the fiber itself has been demonstrated to be a powerful technique. In this work, we exploit the thermal sensitivity of whispering gallery mode resonances to characterize the pump-induced temperature increment in holmium doped...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-03-01
|
Series: | Sensors |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-8220/21/6/2094 |
id |
doaj-be7d3c2e94dc4d238fe4b0060fdac07b |
---|---|
record_format |
Article |
spelling |
doaj-be7d3c2e94dc4d238fe4b0060fdac07b2021-03-18T00:00:49ZengMDPI AGSensors1424-82202021-03-01212094209410.3390/s21062094Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nmXavier Roselló-Mechó0Martina Delgado-Pinar1Yuri O. Barmenkov2Alexander V. Kir’yanov3Miguel V. Andrés4Department of Applied Physics and Electromagnetism-ICMUV, University of Valencia, C/Dr. Moliner 50, 46100 Burjassot, SpainDepartment of Applied Physics and Electromagnetism-ICMUV, University of Valencia, C/Dr. Moliner 50, 46100 Burjassot, SpainPhotonics Department, Centro de Investigaciones en Óptica, Loma del Bosque 115, León 37150, MexicoPhotonics Department, Centro de Investigaciones en Óptica, Loma del Bosque 115, León 37150, MexicoDepartment of Applied Physics and Electromagnetism-ICMUV, University of Valencia, C/Dr. Moliner 50, 46100 Burjassot, SpainOptical fiber characterization using whispering gallery mode resonances of the fiber itself has been demonstrated to be a powerful technique. In this work, we exploit the thermal sensitivity of whispering gallery mode resonances to characterize the pump-induced temperature increment in holmium doped and holmium-ytterbium codoped optical fibers. The technique relies on the measurement of the resonances’ wavelength shift due to temperature variation as a function of the pump power. Holmium doped fibers were pumped to the second excited level <inline-formula><math display="inline"><semantics><msup><mrow></mrow><mn>5</mn></msup></semantics></math></inline-formula>I<inline-formula><math display="inline"><semantics><msub><mrow></mrow><mn>6</mn></msub></semantics></math></inline-formula> of the Ho<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> ion using a laser diode at 1125 nm and ytterbium-holmium codoped fibers to the <inline-formula><math display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>F<inline-formula><math display="inline"><semantics><msub><mrow></mrow><mrow><mn>5</mn><mo>/</mo><mn>2</mn></mrow></msub></semantics></math></inline-formula> level of the Yb<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> ion by a laser diode at 975 nm. Our results demonstrate that pumping ytterbium-holmium codoped fibers at 975 nm results in dramatic thermal effects, producing a temperature increment two orders higher than that observed in holmium doped fibers pumped with a 1125 nm laser diode.https://www.mdpi.com/1424-8220/21/6/2094whispering gallery modesholmiumytterbiumdoped fibersfiber characterization2 μm fiber lasers |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xavier Roselló-Mechó Martina Delgado-Pinar Yuri O. Barmenkov Alexander V. Kir’yanov Miguel V. Andrés |
spellingShingle |
Xavier Roselló-Mechó Martina Delgado-Pinar Yuri O. Barmenkov Alexander V. Kir’yanov Miguel V. Andrés Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm Sensors whispering gallery modes holmium ytterbium doped fibers fiber characterization 2 μm fiber lasers |
author_facet |
Xavier Roselló-Mechó Martina Delgado-Pinar Yuri O. Barmenkov Alexander V. Kir’yanov Miguel V. Andrés |
author_sort |
Xavier Roselló-Mechó |
title |
Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm |
title_short |
Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm |
title_full |
Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm |
title_fullStr |
Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm |
title_full_unstemmed |
Application of WGM Resonances to the Measurement of the Temperature Increment of Ho and Ho-Yb Doped Optical Fibers Pumped at 1125 and 975 nm |
title_sort |
application of wgm resonances to the measurement of the temperature increment of ho and ho-yb doped optical fibers pumped at 1125 and 975 nm |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2021-03-01 |
description |
Optical fiber characterization using whispering gallery mode resonances of the fiber itself has been demonstrated to be a powerful technique. In this work, we exploit the thermal sensitivity of whispering gallery mode resonances to characterize the pump-induced temperature increment in holmium doped and holmium-ytterbium codoped optical fibers. The technique relies on the measurement of the resonances’ wavelength shift due to temperature variation as a function of the pump power. Holmium doped fibers were pumped to the second excited level <inline-formula><math display="inline"><semantics><msup><mrow></mrow><mn>5</mn></msup></semantics></math></inline-formula>I<inline-formula><math display="inline"><semantics><msub><mrow></mrow><mn>6</mn></msub></semantics></math></inline-formula> of the Ho<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> ion using a laser diode at 1125 nm and ytterbium-holmium codoped fibers to the <inline-formula><math display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>F<inline-formula><math display="inline"><semantics><msub><mrow></mrow><mrow><mn>5</mn><mo>/</mo><mn>2</mn></mrow></msub></semantics></math></inline-formula> level of the Yb<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> ion by a laser diode at 975 nm. Our results demonstrate that pumping ytterbium-holmium codoped fibers at 975 nm results in dramatic thermal effects, producing a temperature increment two orders higher than that observed in holmium doped fibers pumped with a 1125 nm laser diode. |
topic |
whispering gallery modes holmium ytterbium doped fibers fiber characterization 2 μm fiber lasers |
url |
https://www.mdpi.com/1424-8220/21/6/2094 |
work_keys_str_mv |
AT xavierrosellomecho applicationofwgmresonancestothemeasurementofthetemperatureincrementofhoandhoybdopedopticalfiberspumpedat1125and975nm AT martinadelgadopinar applicationofwgmresonancestothemeasurementofthetemperatureincrementofhoandhoybdopedopticalfiberspumpedat1125and975nm AT yuriobarmenkov applicationofwgmresonancestothemeasurementofthetemperatureincrementofhoandhoybdopedopticalfiberspumpedat1125and975nm AT alexandervkiryanov applicationofwgmresonancestothemeasurementofthetemperatureincrementofhoandhoybdopedopticalfiberspumpedat1125and975nm AT miguelvandres applicationofwgmresonancestothemeasurementofthetemperatureincrementofhoandhoybdopedopticalfiberspumpedat1125and975nm |
_version_ |
1724218101995667456 |