The analysis of their shape, size, variation with factors such as the time and the concentration gradient is essential for forming the basis of diffusivity determination. These fringes are the data collected from the experiments. Then, the collected data is resolved in both space and time. Fringes represent the concentration field in the space-time domain from which diffusivity canbe experimentally measured. For the calculation of the diffusion coefficients in clear liquid mixes, optical techniques such as classical interferometry, holographic interferometry, and electronic speckle pattern interferometry are generally utilized. Various types of interferometers are used for the experiment . In this term paper, we have restricted the discussion to optical interferometry-based techniques for diffusivity measurements. Here, both classical and modern interferometry-based techniques have been discussed. The following techniques like Phase Shifting Interferometry, Common Path Shearing Interferometry, Holographic Interferometry, Electronic Speckle Pattern Interferometry, Multiple Beam Interferometry and Michaelson Interferometry have been selected owing to the fact that they are used widely for various laboratory and industrial applications from a plethora of optical techniques available. Each technique has been briefly introduced in the form of its scientific basis and followed up by the experimental procedure and analysis. Care has been taken to discuss various aspects such as advantages and disadvantages of each technique mentioned above. The term paper aims at giving the reader a brief overview of the workings of the optical interferometry-based techniques for diffusion coefficient determination mentioned above. They have been discussed below in the next section.