title: DWDM-PON at 25 GHz channel spacing based on ASE injection seeding.
abstract: We demonstrate a 25 GHz-channel-spaced DWDM-PON based on ASE injection seeding. A 60 km transmission at 1.25 Gb/s per channel is available with a 2nd generation FEC. The major limiting factor is the optical back reflection induced penalty. Thus a high gain reflective modulator and/or relocation of the seed light increase the transmission length. We demonstrated 90 km transmission with relocated seed light to remote node.
authors.affiliation: Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, South Korea.
authors.forename: Joon-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Sang-Rok
authors.initials: SR
authors.lastname: Moon
authors.forename: Sang-Hwa
authors.initials: SH
authors.lastname: Yoo
authors.forename: Chang-Hee
authors.initials: CH
authors.lastname: Lee