We developed high-concentration erbium doped fiber as a saturable absorber, making use of its concentration quenching. Then, we developed all-fiber Fabry-Perot pulse laser with high-concentration erbium doped fiber, and demonstrated it enables stable and passive pulse oscillation regardless of disturbance.

Furthermore, we successfully improve power efficiency and shortening pulse width to 1.8 µs by optimizing the structure of the fiber laser.

1.
Piotr
Myslinski
,
Dung
Nguyen
and
Jacek
Chrostowski
(
1997
)
Effects of Concentration on the Performance of Erbium-Doped Fiber Amplifiers
,
Journal of Lightwave Technology
, Vol.
15
, No.
1
pp.
112
113
2.
N.
Pavel
,
J.
Saikawa
,
S.
Kurimura
, and
T.
Taira
(
2001
)
Jpn. J. App1. Phys.
Vol.
40
, p.
1253
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