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  2. All Volumes and Issues
  3. Volume 14, Number 2, 2024
  4. Methods of active light modulation

Methods of active light modulation

JCPEE.
2024;
Volume 14, Number 2
: pp.1-5
https://doi.org/10.23939/jcpee2024.02.001
Authors:
  1. Valentyn Bzhenchakivskyi
1
Lviv Polytechnic National University

Active light modulation enables precise control over such light properties as intensity, phase, frequency, and polarization. This article examines electrooptic (EO), acousto-optic (AO), and magneto-optic (MO) modulation methods, analyzing their principles, advantages, and limitations for high-speed optical systems.

The EO modulation, based on changes in the refractive index under the influence of an electric field, provides ultrafast signal modulation but is sensitive to electromagnetic interference. The AO modulation uses acoustic waves to periodically vary the refractive index, allowing high-speed operation but requiring significant energy. The MO modulation utilizes magnetized materials for efficient Q-switching, but faces challenges such as lattice mismatch and photon integration. A comparative analysis highlights the EO modulation as the optimal one for high-speed optical networks, AO being fit for spectroscopy and telecommunications, and MO for Qswitched lasers and integrated photonics. The results obtained support advances in next-generation optical devices, emphasizing the need for further research in material optimization and system integration. 

magneto-optical modulation
Q-factor modulation
acousto-optical modulation
electro-optical modulation
Faraday effect
laser technology
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