Subluminal and superluminal propagation in Er doped fiber Bragg grating
Center for photon Information Processing, and Graduate School of Information and Telecommunications, Inha University, Incheon 402-751, South Korea
Corresponding author: a firstname.lastname@example.org
Revised: 26 May 2008
Published online: 13 June 2008
The method to pump the FBG written into an Er3+-doped optical fiber is proposed to decrease or increase the group velocity of a probing pulse based on the fact that a pump-induced process changes the refractive index and dispersion associated with the 4I15/2–4I13/2 transition in Er3+-doped optical fiber. The system equations are derived. The group velocity modification is numerically demonstrated and discussed with the effects of an optical pump power, fiber Bragg grating length, doping concentration of Er3+ ions, and modulation amplitude of the grating.
PACS: 42.81.Dp – Propagation, scattering, and losses; solitons / 42.25.Fx – Diffraction and scattering / 42.50.Nn – Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008