title: 30 Gbps 4-PAM transmission over 200 m of MMF using an 850 nm VCSEL.
abstract: We present high speed real time, error free 4-PAM transmission for short range optical links based on a VCSEL operating at 850 nm, a multimode fibre and a simple intensity detector. Transmission speeds of 25 Gbps and 30 Gbps are demonstrated, and the maximum fibre reaches were 300 m and 200 m, respectively. The 4-PAM is also compared with OOK transmission at 25 Gbps, and we find that at this bit rate 4-PAM increases the error free transmission distance in the multimode fibre by 100 m, compared to OOK.
authors.affiliation: Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412-96 Gothenburg, Sweden. krzysztof.szczerba@chalmers.se
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Szczerba
authors.forename: Petter
authors.initials: P
authors.lastname: Westbergh
authors.forename: Johnny
authors.initials: J
authors.lastname: Karout
authors.forename: Johan
authors.initials: J
authors.lastname: Gustavsson
authors.forename: Åsa
authors.initials: Å
authors.lastname: Haglund
authors.forename: Magnus
authors.initials: M
authors.lastname: Karlsson
authors.forename: Peter
authors.initials: P
authors.lastname: Andrekson
authors.forename: Erik
authors.initials: E
authors.lastname: Agrell
authors.forename: Anders
authors.initials: A
authors.lastname: Larsson