The field of optomechatronics provides synergistic effects of optics, mechanics and
electronics for efficient sensor development. Optical sensors for the measurement of
mechanical quantities, equipped with appropriate electronic signal (pre)processing means
have a wide range of applications, from surface testing, stress monitoring, thin film analysis to
biochemical sensing. The aim of this special issue is to provide an overview of actual research
and innovative applications of optomechatronics in sensors. Papers addressing, inter alia,
optical sensor principles, fiber-optic sensors, electronic speckle pattern interferometry, surface
analysis, thin film measurement, FGB sensors, and biochemical sensors are provided.