Comparison of Universal Fiber Against OM4 Fiber Transmission Using PAM4 at 50 Gb/s Over 152 m

The transmission characteristics of the universal fiber concept are shown and its performance is compared to standard OM4 fiber using a directly modulated VCSEL at 50 Gb/s using PAM4 modulation format. Results show almost identical performance up to a distance of 152 m without any digital signal processing. Coupling loss of less than 0.5 dB is achieved between VCSEL and universal fiber using free space optics, which is higher by only 0.2 dB compared to coupling into an OM4 fiber.