We investigate the spectral response of a Brillouin amplifier in the frequency regime within the stimulated-Brillouin-scattering (SBS) bandwidth. This is done by amplitude modulating the pump with a low frequency; therefore, unlike in previous studies, the spectrum of the modulated pump is, in all cases, smaller than the SBS bandwidth. We show both theoretically and experimentally that, unlike phase modulation, amplitude modulation increases the Brillouin amplifier gain and that this effect has a very narrow bandwidth. Only modulation frequencies that are lower than a certain cutoff frequency increase the gain. This cutoff frequency can be arbitrarily small.

© 2003 Optical Society of America

[Optical Society of America ]

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Techniques for coherent phonon excitation and stimulated Brillouin scattering (AO)
• Brillouin scattering spectrum in photonic crystal fiber with a partially germanium-doped core (OL)
• Dependence of the Brillouin frequency shift on strain and temperature in a photonic crystal fiber (OL)
• Coherent probe-pump-based Brillouin sensor for centimeter-crack detection (OL)
• Effect of optical phase on a distributed Brillouin sensor at centimeter spatial resolution (OL)

Related Conference Papers

• Quantification of Signal Distortion in Brillouin Scattering Based Slow Light Systems
• Flexible Slow and Fast Light Using Tailored Brillouin Spectra in Optical Fibers
• Distortion-Reduced Pulse-Train Propagation with Large Delay in a Triple Gain Media
• Brillouin Amplification of Harmonics Generated by External Modulation for Radio Over Fiber Applications with Ultra Low Phase Noise Properties
• Trace-species measurements from phase shift of transient-grating signals