Optical bistability in fiber ring resonator containing an erbium doped fiber amplifier and quantum dot doped fiber saturable absorber.
In this paper we study the optical bistability in a double coupler fiber ring resonator which consists of an erbium doped fiber amplifier (EDFA) in half part of the fiber ring and a quantum dot doped fiber (QDF) saturable absorber in the other half. The bistability is provided by the QDF section of the ring resonator. The EDFA is employed to reduce the switching power. The transmitted and reflected bistability characteristics are investigated. It is shown that the switching power for this new bistable device is less than 10 mW.
Physics Department, Sharif University of Technology, Tehran, Iran. tofighi_sara@yahoo.com
Sara
S
Tofighi
Somayeh Safari
SS
Farshemi
Batool
B
Sajjad
Fatemeh
F
Shahshahani
Ali Reza
AR
Bahrampour