Abstract
It is found that strong pump absorption in short Er/Yb-codoped fiber causes large heating effects, which leads to a significant Bragg wavelength shift in the gratings written in the fiber. A 5 mm grating written in a Er/Yb-codoped fiber exhibits a Bragg wavelength shift of 0.30 nm when pumped with 50 mW of power from a 980 nm laser. This corresponds to about 36 °C of temperature increase in the associated core area. The lasing wavelength of a DBR fiber laser constructed with the same Er/Yb fiber is also found to shift by 0.24 nm when the pump power increases from 8 mW (the DBR fiber laser threshold) to 50 mW.
Original language | English |
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Pages (from-to) | 385-389 |
Number of pages | 5 |
Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
Volume | 32 |
Issue number | 7 |
Publication status | Published - 1 Dec 1998 |
ASJC Scopus subject areas
- General Engineering