Enabling 4-Lane Based 400 G Client-Side Transmission Links with MultiCAP Modulation

Abstract

We propose a uniform solution for a future client-side 400 G Ethernet standard based on MultiCAP advanced modulation format, intensity modulation, and direct detection. It employs 4 local area networks-wavelength division multiplexing (LAN-WDM) lanes in 1300 nm wavelength band and parallel optics links based on vertical cavity surface emitting lasers (VCSELs) in 850 nm wavelength band. Total bit rate of 432 Gbps is transmitted over unamplified 20 km standard single mode fiber link and over 40 km link with semiconductor optical amplifier. 70.4 Gb/s transmission over 100 m of OM3 multimode fiber using off-the-shelf 850 nm VCSEL with 10.1 GHz 3 dB bandwidth is demonstrated indicating the feasibility of achieving 100 Gb/s per lane with a single 25 GHz VCSEL. In this review paper we introduce and present in one place the benefits of MultiCAP as versatile scheme for use in a number of client-side scenarios: short range, long range, and extended range.

Multi-band CAP for Next-Generation Optical Access Networks Using 10-G Optics

“…In spite of this, it may still cause penalty when jitter occurs since jitter leads to CAP constellations with not only phase rotation (can be corrected) but also with points more scattered [22]. On this point, K-mean or other nonlinear machine learning equalization schemes may offer better performance than linear MMA [31][32][33][34]. Note that equalizers alone can not address cycle slip issue.…”

Multi-band carrier-less amplitude and phase modulation for VLC: An overview

“…In [17], the multi-band approach was reported to support multi-user access network with 9.3 Gb/s/user. A number of research reports can be found in the recent literature illustrating the interest and feasibility of m-CAP for fiber infrastructures [22,23]. A novel three-dimensional (3D) m-CAP system was investigated in [24] showing the improved performance in the fiber dispersion over the conventional 3D-CAP scheme.…”

Evaluation of Real-Time 8 × 56.25 Gb/s (400G) PAM-4 for Inter-Data Center Application Over 80 km of SSMF at 1550 nm

“…Discrete Multi-tone (DMT) was shown in various flavours to be able to transmit over distances of more than 80 km and at data rates of more than 56 Gbit/s per channel [5]- [9]. Also carrierless amplitude and phase modulation (CAP) seems to be an interesting modulation format for such a scenario [10]- [13]. In addition, numerous publications showed PAM-4 as a possible modulation format for this application, allowing per channel data rates even up to 112 Gb/s [14]- [17].…”