A Cost-Effective Method for High-Quality 60 GHZ Optical Millimeter Wave Signal Generation Based on Frequency Quadrupling

Abstract

Abstract-In this paper, we present a cost effective method to generate a high-quality quadruple frequency optical millimeterwave (MMW) signal using an integrated dual-parallel Mach-Zehnder modulator (IDP-MZM). Not only does the method minimize the complication of the central station (CS) and its frequency demand for the devices, but the generated optical MMW signal as well has good transmission performance. By properly adjusting the direct current (DC) bias, modulation index, and using two radio frequency (RF) driving signals with 135 • phase delay, a high quality dual tone optical MMW at 60 GHz is generated from a 15 GHz RF local oscillator (LO) with optical sideband suppression ratio (OSSR) as high as 32 dB and radio frequency spurious suppression ratio (RFSSR) exceeding 33 dB without optical filter when an IDP-MZM with 30 dB extinction ratio is utilized. Furthermore, the influences of a number of non-ideal parameters, such as imperfect extinction ratio, non-ideal RF driven voltage, and phase difference of RF-driven signals applied to two subMZMs of the IDP-MZM, on OSSR are studied through simulation. Finally, we build a Radio over Fiber system through simulation, and the transmission performance of the generated optical MMW signal is

Optical millimeter wave signal generation with frequency 16-tupling using cascaded MZMs and no optical filtering for radio over fiber system

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The performance of millimeter-wave over fiber using electro absorption modulator and avalenche photodiode

“…The RFSSR of the 36 GHz produced mm-wave is 30 decibels. According to reference [14], an integrated dual-parallel MZM [17], rather than an optical filter, can be utilised to operate a high-quality quadruple frequency mm-wave signal. When a 15 GHz signal is fed into an RF local oscillator, it produces a 60 GHz Mm-wave (LO).…”

“…Only the lower OSSR is possible due to the lower RFSSR between the desired frequency sextupling [7] mm-wave signal and other undesirable RF components. This is due to ineffective suppression of undesirable optical sidebands [14] proposes a method for sextupling the frequency of mm waves without using an optical filter. The 3.5 GHz radiation pattern, where contemporary 5 G runs, enables larger ability and less delay.…”

Towards 5G millimeter-wave wireless networks: a comparative study on electro-optical upconversion techniques

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