Ramam Optical Amplifier: US Patents

The effect of stimulated Raman scattering in a Raman gain medium produces an optical amplifier based on Raman gain, known as a Raman amplifier. Although it can also be a bulk crystal, a waveguide in a photonic integrated circuit, or a cell with a gas or liquid medium, that medium is typically an optical fiber (perhaps a highly nonlinear fiber). When an input signal co-or counterpropagates with a pump beam, whose wavelength is usually a few tens of nanometers shorter, it can be amplified. In conclusion, this paper underscores the importance of understanding and harnessing the principles of Raman amplification in various dynamic optical landscapes. Also, the paper concisely presents US patents related to Raman amplifier.