title: First demonstration of a 2μm few-mode TDFA for mode division multiplexing.
abstract: We report the first demonstration of an inline few-mode thulium doped fiber amplifier (TDFA) operating at 2μm for mode division multiplexed transmission. Similar gain and noise figure performance for both the LP(01) and LP(11) modes are obtained in a cladding pumped 2-mode group TDFA. A maximum gain of 18.3dB was measured at 1970nm with a 3dB gain bandwidth of 75nm while the average noise figure was measured to be between 7 and 8dB for wavelengths longer than 1970nm.
authors.forename: Y
authors.initials: Y
authors.lastname: Jung
authors.forename: P C
authors.initials: PC
authors.lastname: Shardlow
authors.forename: M
authors.initials: M
authors.lastname: Belal
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.forename: A M
authors.initials: AM
authors.lastname: Heidt
authors.forename: J M O
authors.initials: JM
authors.lastname: Daniel
authors.forename: D
authors.initials: D
authors.lastname: Jain
authors.forename: J K
authors.initials: JK
authors.lastname: Sahu
authors.forename: W A
authors.initials: WA
authors.lastname: Clarkson
authors.forename: B
authors.initials: B
authors.lastname: Corbett
authors.forename: J
authors.initials: J
authors.lastname: O'Callaghan
authors.forename: S U
authors.initials: SU
authors.lastname: Alam
authors.forename: D J
authors.initials: DJ
authors.lastname: Richardson