Designing an optical frequency comb generator for visible light communication applications

Mohsin, Marwa Jaleel; Murdas, Ibrahim A.

doi:10.11591/ijece.v12i1.pp471-477

Cited by 2 publications

(1 citation statement)

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“…That can be done by utilizing one silicon coating lithography to regulate the light route below the surrounding LN area in addition to the two ends of sides of the surrounding region [27]. Controllable resonator rings [28], switches [26], modulators in separate phases [29]- [31], and MZI [32], [33] are noteworthy instruments using the elevated variation of the index which used a thin substratum of the LN. Different hybrid systems, which depend on Si3N4 or Si [18], [34] to load and guide an optical mode, are developed by conjunction.…”

Section: Introductionmentioning

confidence: 99%

Symmetric longitudinal Mach-Zehnder modulator using lithium niobate

2023

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There are many problems that restrict the work of the Mach-Zehnder modulator (MZM), including the lack of using various windows of wavelengths, the large half-wave voltage, and the small optical confinement factor. In this paper, a mathematical model for MZM based on lithium niobate (LN) is designed to solve these problems. In this model, a wide window of optical wavelength from visible-to-infrared (632.8-to-1560 nm) was utilized. Moreover, it achieved a better modulation with lower attenuation and a lower dispersion by the window (1550-1560) nm. The other window of optical wavelength is about (632.8-to-634 nm), and (646-to-647 nm) which can be used for short-haul applications to reduce attenuation and dispersion. Furthermore, a small length of the arm, about 2-3 mm, was utilized to accomplish a large change of the refractive index and lower applied voltage of up to 250 V. The small operation half-wave voltage achieved about 1.2 V leading to better switching of the MZM. In addition, a large optical confinement factor of ≤1 unitless was obtained. Even better performance of MZM was attained by using a suitable length arm of MZM of about 2 mm, along with an electric field of about 175 V/mm and 233 V/mm using poling at 100 V.

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