Current Affairs 15th April 2025
Current affairs 15th April 2025 by Saurabh Pandey Sir
Bohag Bihu or Rongali Bihu
● Bohag Bihu or Rongali Bihu also called Xaat Bihu is a traditional ethnic festival celebrated in the Northeastern Indian state of Assam and other parts of Northeastern India by the indigenous ethnic groups of Assam, and marks the beginning of the Assamese New Year. The Revolution of Silicon Chips in Communications Introduction to Silicon Chips
● Silicon chips have revolutionized communication, evolving from bulky computers to modern smartphones.
● The journey began with the transistor, leading to enhanced chip efficiency and faster communication From Electrons to Photons
● Silicon Photonics: Transition from electrons to photons, offering potential for future data transmission.
● Advantages: Higher speeds, greater data capacity, and lower energy losses Breakthroughs in Silicon Photonics
● Miniaturized Lasers: Integration of lasers on silicon wafers marks a significant advancement. Photon Role: Potential to revolutionize data storage and manipulation Challenges in Integrating Photonic Sources
● Current Solutions: Separate laser sources attached to chips, leading to slower operations and higher costs. The Structure of a Photonic Chip
● Key Components: Light source, waveguides, modulators, and photodetectors. Waveguides & Modulators: Pathways for photons and encoding information onto light The Science Behind Lasers Laser Function: Amplifies light through stimulated emission, creating a coherent beam.
Silicon’s Indirect Bandgap: Challenges in light emission, addressed by materials like gallium arsenide Innovative Solutions in Laser Integration Gallium Arsenide: Overcoming atomic structure mismatches with innovative techniques. The Future of Silicon Photonics Quantum Computing: Potential applications in revolutionizing information
