Open AccessASE Suppression in Backward-Pumped Er/Yb Double-Cladding Fiber Amplifier via Cladding Feedback
Author(s) -
Xiaolei Bai,
Quan Sheng,
Shijie Fu,
Haiwei Zhang,
Yang Cao,
Zhaoxin Xie,
Wei Shi,
Jianquan Yao
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2615764
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We demonstrate a backward-pumped 1550 nm narrow-linewidth Erbium-Ytterbium double-cladding fiber amplifier with amplified spontaneous emission (ASE) suppression. Compared with the typical backward-pumped amplifier without feedback, the ASE power can be suppressed by over 2 dB by cladding feedback without other filters. The slope efficiency is 23.2%, which only decreased by 0.4%. The linewidth and relative intensity noise of 4.51 kHz and -92 dBm/Hz are also compared with those of the typical backward-pumped amplifier without feedback.