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Millimeter wave generation for 6G applications using a semiconductor optical amplifier-based ring cavity laser system

SINDHU MUTHUDURAI1,* , SIVANANTHARAJA AVANINATHAN1, SELVENDRAN SAKKARAI2, ESAKKI MUTHU KADARKARAI3

Affiliation

  1. Department of Electronics and Communication Engineering, Alagappa Chettiar Government College of Engineering and Technology, Karaikudi, Tamil Nadu, India
  2. School of Electronics Engineering (SENSE), Vellore Institute of Technology, Chennai 600127, India
  3. Department of Electronics and Communication Engineering, Anna University Regional Campus, Madurai 625019, India

Abstract

The growing demand for high-frequency communication in 6G applications has led to significant interest in millimeter-wave (mm-wave) signal generation. To address many of the issues that electronic components confront, photonic methods that transfer signals into the optical domain for processing present a possible way forward. This paper explores the use of a Semiconductor Optical Amplifier-based Ring Cavity Laser System for the generation of mm-wave signals through optical signals. The proposed scheme eliminates the need for an external laser or pump source, thereby substantially reducing the system's complexity and cost. The transmission performance is evaluated by modulating 10 Gbps data and transmitting it over 50 km of optical fiber, that achieves a satisfactory Bit Error Rate (BER) and clear eye diagrams. Furthermore, this scheme can generate tunable mm-waves ranging from 1 GHz to several THz, with output power of around -15.4 dBm at 200 GHz.

Keywords

Semiconductor Optical Amplifier (SOA), Millimeter-wave (mm-wave), Ring Cavity Laser System, 6G.

Citation

SINDHU MUTHUDURAI, SIVANANTHARAJA AVANINATHAN, SELVENDRAN SAKKARAI, ESAKKI MUTHU KADARKARAI, Millimeter wave generation for 6G applications using a semiconductor optical amplifier-based ring cavity laser system, Optoelectronics and Advanced Materials - Rapid Communications, 19, 9-10, September-October 2025, pp.412-420 (2025).

Submitted at: March 24, 2025

Accepted at: Oct. 10, 2025