Investigation of the method of current thermal modulation of the wavelength VCSEL
https://doi.org/10.17586/2220-8054-2022-13-6-615-620
Abstract
Subject of investigation. In this paper, we analyzed in detail the thermal mode of the operation of a vertical-cavity surface-emitting laser (VCSEL) used in the experiment. Method. As a part of the work, we carried out a theoretical study of the recurrence relation describing the change in the VCSEL wavelength under the action of specially selected modulation current pulses. The high speed of the device working is determined by the optical demodulation scheme, which is based on using a phase-modulated carrier (the demodulation method used is arctangent demodulation: Phase Generated Carrier (PGC-ATAN)). Main results. Formulas were obtained that determine the frequency, phase, and modulation depth which leads to calculation of the principle of change in the modulated VCSEL wavelength at sampling points. Comparison with experimental data showed that the obtained formulas allow one to choose the optimal thermal mode of VCSEL operation and reliably calculate the characteristics of the modulation process in terms of the carrier phase. Practical significance. The obtained formulas make it possible to calculate the exact characteristics of the modulation process, and the precisely calculated phase of the modulation source. As a result, one can compensate it more effectively when demodulating phase of the interferometer.
About the Authors
G. P. Miroshnichenko
ITMO University
Russian Federation
Russian Federation
A. N. Arzhanenkova
ITMO University
Russian Federation
Russian Federation
M. Yu. Plotnikov
ITMO University
Russian Federation
Russian Federation
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Review
For citations:
Miroshnichenko G.P., Arzhanenkova A.N., Plotnikov M.Yu. Investigation of the method of current thermal modulation of the wavelength VCSEL. Nanosystems: Physics, Chemistry, Mathematics. 2022;13(6):615-620. https://doi.org/10.17586/2220-8054-2022-13-6-615-620
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