Characterization of transimpedance amplifier as optical to electrical converter on designing optical instrumentation

International Conference on Physical Instrumentation and Advanced Materials

物理学;材料科学

Hanto, D.^1 ; Ula, R.K.^1

Research Center for Physics, Indonesian Institute of Sciences, South Tangerang, Indonesia^1

关键词: Correlation equation;    Electrical parameter;    Multimode optical fibers;    Non-linear correlations;    Optical attenuators;    Optical conversion;    Optical Instrumentation;    Optical-to-electrical;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/853/1/012022/pdf
DOI  :  10.1088/1742-6596/853/1/012022

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Optical to electrical converter is the main components for designing of the optical instrumentations. In addition, this component is also used as signal conditioning. This component usually consists of a photo detector and amplifier. In this paper, characteristics of commercial amplifiers from Thorlabs PDA50B-EC has been observed. The experiment was conducted by diode laser with power of -5 dBm and wavelength 1310 nm; the optical attenuator to vary optical power from 0 to 60 dB, optical to electrical converter from Thorlabs Amplifier PDA50B-EC; multimode optical fiber to guide the laser; and digital voltmeter to measure the output of converter. The results of the characterization indicate that each channel amplification has a non-linear correlation between optical and electrical parameter; optical conversion measurement range of 20-23 dB to full scale; and different measurement coverage area. If this converter will be used as a part component of optical instrumentation so it should be adjusted suitably with the optical power source. Then, because of the correlation equation is not linear so calculation to determine the interpretation also should be considered in addition to the transfer function of the optical sensor.