title: Four 45 Gbps PAM4 VCSEL based transmission through 300 m wideband OM4 fiber over SWDM4 wavelength grid.
abstract: We demonstrate successful transmission of four 45 Gbps PAM4 single-channels through OM4 multimode fibers (MMFs) and wideband MMF using a PAM4 PHY chip and four vertical cavity surface emitting lasers (VCSELs) with wavelengths ranging over short wavelength division multiplexing (SWDM) grid. Real-time bit error ratios (BERs) < 2 × 10-4were achieved for all four 45 Gbps PAM4 SWDM grid channels over 100 m, 200 m, and 300 m of wideband OM4 MMFs. All four channel received PAM4 optical eyes are shown after propagating through 100 m, 200 m, and 300 m of wideband OM4 as well as 100 m and 200 m conventional OM4 MMFs. The measured BERs as a function of the inner eye optical modulation amplitudes (OMAs) are shown for all four SWDM grid channels. Inner eye OMAs ranged from -16.2 dBm to -13.5 dBm for different channels over different OM4 MMF types at the KP4 BER threshold of 2 × 10-4.
authors.forename: Reza
authors.initials: R
authors.lastname: Motaghiannezam
authors.forename: Ilya
authors.initials: I
authors.lastname: Lyubomirsky
authors.forename: Henry
authors.initials: H
authors.lastname: Daghighian
authors.forename: Chris
authors.initials: C
authors.lastname: Kocot
authors.forename: Timo
authors.initials: T
authors.lastname: Gray
authors.forename: Jim
authors.initials: J
authors.lastname: Tatum
authors.forename: Adrian
authors.initials: A
authors.lastname: Amezcua-Correa
authors.forename: M
authors.initials: M
authors.lastname: Bigot-Astruc
authors.forename: D
authors.initials: D
authors.lastname: Molin
authors.forename: F
authors.initials: F
authors.lastname: Achten
authors.forename: P
authors.initials: P
authors.lastname: Sillard