title: Self-seeding-based 10Gb/s over 25km optical OFDM transmissions utilizing face-to-face dual-RSOAs at gain saturation.
abstract: Self-seeded passive optical networks (PONs) are currently attracting extensive research interest. In this paper, a novel self-seeded PON transmitter is, for the first time, proposed and experimentally demonstrated, which incorporates two face-to-face-positioned reflective semiconductor optical amplifiers (RSOAs) operating at their gain saturation regions: one RSOA directly driven by an upstream electrical signal and the other RSOA biased at a fixed current. Detailed experimental explorations are undertaken of the dynamic performance characteristics of the proposed transmitter. It is shown that, in comparison with previously reported self-seeded transmitters each employing a reflective mirror and a single electrical signal-driven RSOA, the proposed transmitter has a number of salient advantages including, considerably narrowed optical signal spectra, up to 16dB reduction in RINs of intensity-modulated optical signals, and residual intensity modulation crosstalk suppression as high as 10.7dB. The aforementioned features enable experimental demonstrations of real-time self-seeded 10Gb/s optical OFDM (OOFDM) transmitters. In particular, by making use of two low-cost RSOAs having their 3-dB modulation bandwidths as small as 1.125GHz, 10Gb/s over 25km adaptive OOFDM transmissions with power penalties of 0.6dB are experimentally achieved in the simple self-seeded IMDD PON systems.
authors.forename: M L
authors.initials: ML
authors.lastname: Deng
authors.forename: Y
authors.initials: Y
authors.lastname: Ling
authors.forename: X F
authors.initials: XF
authors.lastname: Chen
authors.forename: R P
authors.initials: RP
authors.lastname: Giddings
authors.forename: Y H
authors.initials: YH
authors.lastname: Hong
authors.forename: X W
authors.initials: XW
authors.lastname: Yi
authors.forename: K
authors.initials: K
authors.lastname: Qiu
authors.forename: J M
authors.initials: JM
authors.lastname: Tang