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Updated: May 25, 2026
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
30 Gbps 4-PAM transmission over 200 m of MMF using an 850 nm VCSEL
Krzysztof Szczerba1, Petter Westbergh, Johnny Karout
1Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412-96 Gothenburg, Sweden. krzysztof.szczerba@chalmers.se
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.
