Design considerations and performance analysis of dual photodetector system for reliable laser wavelength and power monitoring

• Published in: Sensors and actuators. A. Physical. Vol. 261; pp. 14 - 23
• Main Authors: Joža, Ana V., Bajić, Jovan S., Manojlović, Lazo M., Milosavljević, Vladimir A., Batinić, Branislav D., Laković, Nikola M., Živanov, Miloš B.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.07.2017; Elsevier BV
• Subjects: 2x2 Coupler; Dual photodetector system; Error analysis; Fiber optics; Lasers; Linearity; Monitoring; Optical fibers; Photodiodes; Photometers; Power monitoring; Ratiometric measurement; Sensors; Spectral sensitivity; Stability; Studies; Temperature dependence; Temperature effects; Wavelength monitoring; Power monitoring; Dual photodetector system; 2x2 Coupler; Wavelength monitoring; Ratiometric measurement

[Display omitted] •A simple and low-cost sensor system for reliable laser wavelength and power monitoring is presented.•Three wavelength sensitive components are used: fiber-optic coupler, Ge and InGaAs photodiodes.•Excellent linearity (R2=0.99942) and good repeatability of measurement results were...