In this paper, we propose a longitudinal cascaded few-mode erbium-doped fiber amplifier (FM-EDFA) by particle swarm optimization (PSO). Triple-cascaded few-mode erbium-doped fibers (FM-EDFs) are applied longitudinally, which have the same refractive index distributions and different erbium-ion doping profiles. Each fiber is uniformly doped in different regions. The input power of the pump and signal are settled. The length and order of three pieces of FM-EDFs are optimized by PSO, which helps to minimize the differential modal gain (DMG) and maximize the modal gain at the output port. An ultra-low DMG of 0.007 dB and minimum modal gain (MMG) of about 24.890 dB are obtained at the wavelength of 1550 nm.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.