Universal Photonic Interconnect for Data Centers

• Published in: Journal of lightwave technology Vol. 36; no. 2; pp. 175 - 180
• Main Authors: Tan, Michael R. T., Rosenberg, Paul, Sorin, Wayne V., Wang, Binhao, Mathai, Sagi, Panotopoulos, George, Rankin, Glenn
• Format: Journal Article
• Language: English
• Published: New York IEEE 15-01-2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive optics; Bandwidth; Data centers; Equalization; Error correction; Fiber optic links and subsystems; Fiber optic networks; High-speed optical techniques; Integrated optics; Optical crosstalk; Optical fiber communication; optical interconnects; Photonics; Pulse amplitude modulation; Vertical cavity surface emission lasers; Vertical cavity surface emitting lasers; Wavelength division multiplexing
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2017.2747501

Tb/s class, copackaged coarse wavelength division multiplexing optical engine based on four wavelength vertical cavity surface emitting lasers (VCSELs) around 1 <inline-formula><tex-math notation="LaTeX">\mu</tex-math> </inline-formula>m is presented. The capability to scale bandwidth of 64 Gb/s using equalization and advanced modulation scheme, e.g., four-level pulse amplitude modulation (PAM4) is demonstrated. The capability to scale link distance of 2 km using single-mode VCSELs and standard SMF-28 fiber is demonstrated. Single-mode VCSELs error-free transmission at 25 Gb/s NRZ over 2 km of SMF-28 is achieved. Using forward-error-correction error-free transmission is possible for the PAM4 modulation over 2 km of SMF-28.