rus
Issue #6/2025
A. Yu. Kireev, A. A. Zhuravlev, A. V. Sosunov
Operating Point Bias Compensation Method for the Mach-Zehnder Modulator With Thermistors Circuit
Operating Point Bias Compensation Method for the Mach-Zehnder Modulator With Thermistors Circuit
DOI: 10.22184/1993-7296.FRos.2025.19.6.478.485
Mach-Zehnder microwave modulators on bulk or thin film lithium niobate are key components in data transmission networks, including quantum communications. However, the problem of operating point drift is still significant. A lot of methods for DC bias compensation for different technical tasks have been demonstrated. In this paper, we propose analog electrical scheme for thermal DC bias compensation using a thermistor system. We demonstrate the tuning of the electrical scheme for the operating point bias from temperature, and then experimentally confirm the effectiveness of this method by obtaining the maximum deviation from the mean optical power no more than 1.0 dB or 1.0 V applied DC voltage at temperature up to 45 °C. The proposed approach does not require any additional power supply for adjustment and can be used for special tasks in remote locations.
Subscribe to the journal Photonics Russia to read the full article.
Mach-Zehnder microwave modulators on bulk or thin film lithium niobate are key components in data transmission networks, including quantum communications. However, the problem of operating point drift is still significant. A lot of methods for DC bias compensation for different technical tasks have been demonstrated. In this paper, we propose analog electrical scheme for thermal DC bias compensation using a thermistor system. We demonstrate the tuning of the electrical scheme for the operating point bias from temperature, and then experimentally confirm the effectiveness of this method by obtaining the maximum deviation from the mean optical power no more than 1.0 dB or 1.0 V applied DC voltage at temperature up to 45 °C. The proposed approach does not require any additional power supply for adjustment and can be used for special tasks in remote locations.
Subscribe to the journal Photonics Russia to read the full article.
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