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A Novel Technique for Creating Optical Multi-carrier Generation Using Nested Electro-Absorption Modulators

2022; Springer Science+Business Media; Linguagem: Inglês

10.1007/978-3-031-23207-7_2

1611-3349

Mohammed Hasan Alwan, Yousif I. Hammadi, Mamoon A. Muhi, Omar Abdulkareem Mahmood, Alexey Tselykh, Mohammed Saleh Ali Muthanna,

Semiconductor Lasers and Optical Devices

In this paper, we present and quantitatively show a novel technique for the creation of an optically multi-carrier that is founded upon single and nested electro-absorption modulators (EAMs). These setups include single and four cascaded EAMs, and a radio-frequency (RF) signal. These stacked EAMs are triggered by a radio frequency signal that has various frequencies in each EAM. Where the $$EAM_1 $$ , $$EAM_2 $$ , $$EAM_3 $$ , and $$EAM_4$$ are driven by the RF signal with the frequency of ( $$f_e, f_e/2, f_e/4$$ , and $$f_e/8 $$ ) GHz, respectively. The MATLAB program is used to develop and model the computational equations of the developed models, as well as to simulate the structures. We demonstrate that perhaps the amount of spectral lines is precisely dependent on the magnitude of the RF input signal to the EAM in our simulations. Additionally, the number of optical lines varies linearly with EAMs number. Furthermore, the number of optical lines that have a spectral flatness of 1dB also increases with increasing the number of EAMs.