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Performance evaluation of remote millimeter wave generation in a digital optical link incorporating a gain switched vertical cavity surface emitting laser

K. MURALI KRISHNA1,* , M. GANESH MADHAN1

Affiliation

  1. epartment of Electronics Engineering, Madras Institute of Technology campus, Anna University, Chennai 600 044, India

Abstract

In this work, gain switched 1.55µm Vertical Cavity Surface Emitting Laser (VCSEL) is analyzed for simultaneous transmission of Gigabit digital data as well as for remote millimeter (mm) wave generation at harmonic frequencies in a Single Mode Fiber (SMF) link. Numerical simulation of gain switching on VCSEL under square pulse excitation is carried out. For Gigabit Ethernet link transmission, the maximum link lengths for both 1.25 and 2.5Gbps are found as 106 km and 96 km at BER ≤ 10-10. For a link length of 10km, the generated RF power at 2.5GHz, 5GHz and 10GHz frequencies are -25.68 dBm,-28.49 dBm and -37.13 dBm respectively, under 2.5 Gbps transmission. Signal powers of -35.05 dBm,-36 dBm, -39.52dBm and -50.56dBm are observed for 1.25GHz, 2.5GHz, 5GHz and 10GHz respectively, under 1.25Gbps transmission..

Keywords

Gain switching, Full width at half maximum, VCSEL, Power spectrum, Remote mm wave generation, Radio over fiber.

Submitted at: April 19, 2018
Accepted at: Feb. 12, 2019

Citation

K. MURALI KRISHNA, M. GANESH MADHAN, Performance evaluation of remote millimeter wave generation in a digital optical link incorporating a gain switched vertical cavity surface emitting laser, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 1-2, pp. 54-63 (2019)