Proposal and Verification of Auto Calibration Technique for Bias Control Circuit Connecting to Built-In Optical Power Monitor in Imperfect IQ-Modulator
Summary :
We show that imperfection in an IQ-modulator degrades the accuracy of the auto bias control (ABC) circuit connected to the modulator's complementary port. Theoretical analyses show that the IQ-modulator constructed by a nested Mach-Zehnder modulator with a low extinction ratio can distort a constellation of modulated light observed at the complementary port. We propose an auto calibration technique for the ABC circuit that can effectively suppress this degradation. Experimental results using 32-Gbaud, 16-QAM signals showed the measured Q-factor improved by 0.5dB with our proposed technique.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E103-B No.11 pp.1299-1304
- Publication Date
- 2020/11/01
- Publicized
- 2020/05/22
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2019OBP0010
- Type of Manuscript
- Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
- Category
Authors
Hiroto KAWAKAMI
NTT Corporation
Shoichiro KUWAHARA
NTT Corporation
Yoshiaki KISAKA
NTT Corporation
Keyword
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Hiroto KAWAKAMI, Shoichiro KUWAHARA, Yoshiaki KISAKA, "Proposal and Verification of Auto Calibration Technique for Bias Control Circuit Connecting to Built-In Optical Power Monitor in Imperfect IQ-Modulator" in IEICE TRANSACTIONS on Communications,
vol. E103-B, no. 11, pp. 1299-1304, November 2020, doi: 10.1587/transcom.2019OBP0010.
Abstract: We show that imperfection in an IQ-modulator degrades the accuracy of the auto bias control (ABC) circuit connected to the modulator's complementary port. Theoretical analyses show that the IQ-modulator constructed by a nested Mach-Zehnder modulator with a low extinction ratio can distort a constellation of modulated light observed at the complementary port. We propose an auto calibration technique for the ABC circuit that can effectively suppress this degradation. Experimental results using 32-Gbaud, 16-QAM signals showed the measured Q-factor improved by 0.5dB with our proposed technique.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019OBP0010/_p
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@ARTICLE{e103-b_11_1299,
author={Hiroto KAWAKAMI, Shoichiro KUWAHARA, Yoshiaki KISAKA, },
journal={IEICE TRANSACTIONS on Communications},
title={Proposal and Verification of Auto Calibration Technique for Bias Control Circuit Connecting to Built-In Optical Power Monitor in Imperfect IQ-Modulator},
year={2020},
volume={E103-B},
number={11},
pages={1299-1304},
abstract={We show that imperfection in an IQ-modulator degrades the accuracy of the auto bias control (ABC) circuit connected to the modulator's complementary port. Theoretical analyses show that the IQ-modulator constructed by a nested Mach-Zehnder modulator with a low extinction ratio can distort a constellation of modulated light observed at the complementary port. We propose an auto calibration technique for the ABC circuit that can effectively suppress this degradation. Experimental results using 32-Gbaud, 16-QAM signals showed the measured Q-factor improved by 0.5dB with our proposed technique.},
keywords={},
doi={10.1587/transcom.2019OBP0010},
ISSN={1745-1345},
month={November},}
Copy
TY - JOUR
TI - Proposal and Verification of Auto Calibration Technique for Bias Control Circuit Connecting to Built-In Optical Power Monitor in Imperfect IQ-Modulator
T2 - IEICE TRANSACTIONS on Communications
SP - 1299
EP - 1304
AU - Hiroto KAWAKAMI
AU - Shoichiro KUWAHARA
AU - Yoshiaki KISAKA
PY - 2020
DO - 10.1587/transcom.2019OBP0010
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2020
AB - We show that imperfection in an IQ-modulator degrades the accuracy of the auto bias control (ABC) circuit connected to the modulator's complementary port. Theoretical analyses show that the IQ-modulator constructed by a nested Mach-Zehnder modulator with a low extinction ratio can distort a constellation of modulated light observed at the complementary port. We propose an auto calibration technique for the ABC circuit that can effectively suppress this degradation. Experimental results using 32-Gbaud, 16-QAM signals showed the measured Q-factor improved by 0.5dB with our proposed technique.
ER -
English
