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Experimental Study of a Hybrid Small-Signal Parameter Modeling and Extraction Method for a Microoptoelectronic Device

Authors
Han, Jae-HoPark, Sung-Woong
Issue Date
12월-2015
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Control systems; frequency response; optoelectronic devices; parameter estimation
Citation
IEEE-ASME TRANSACTIONS ON MECHATRONICS, v.20, no.6, pp.3285 - 3290
Indexed
SCIE
SCOPUS
Journal Title
IEEE-ASME TRANSACTIONS ON MECHATRONICS
Volume
20
Number
6
Start Page
3285
End Page
3290
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/91687
DOI
10.1109/TMECH.2014.2377736
ISSN
1083-4435
Abstract
In the device performance variation and control for microdevices, accurate models are critical for predicting dc behaviors as well as high-frequency behaviors. Thus, acquiring the characteristics of an optoelectronic device is essential for estimating its application to high-throughput control systems. In particular, we present an experimental and analytical investigation for extracting the parameters and intrinsic properties of an optoelectronic microdevice. Our study utilizes a near-infrared, InGaAsP buried heterostructure, multiquantum well distributed-feedback laser. We utilize a modified frequency response model and the conventional method of subtracting frequency responses in two different bias currents above the laser threshold current to attain the resonance frequency and damping factor using a simple four-parameter curve-fitting procedure. With this method, we were able to acquire the intrinsic properties of the laser and its frequency response. In addition, the series resistance, which is drawn directly from a modified current-voltage (I-V) curve, can explicitly reflect the operation of the laser below and above the threshold current. The parasitic capacitance was found by comparing the measured and extracted intrinsic frequency responses. Our extracted results agree well with previously published results.
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