IEICE TRANSACTIONS on Electronics
Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation
Summary :
A new structure of the electro-optic modulator to compensate the third-order intermodulation distortion (IMD3) is introduced. The modulator includes two Mach-Zehnder modulators (MZMs) operating with frequency chirp and the two modulated outputs are combined with an adequate phase difference. We revealed by theoretical analysis and numerical calculations that the IMD3 components in the receiver output could be selectively suppressed when the two MZMs operate with chirp parameters of opposite signs to each other. Spectral power of the IMD3 components in the proposed modulator was more than 15dB lower than that in a normal Mach-Zehnder modulator at modulation index between 0.15π and 0.25π rad. The IMD3 compensation properties of the proposed modulator was experimentally confirmed by using a dual parallel Mach-Zehnder modulator (DPMZM) structure. We designed and fabricated the modulator with the single-chip structure and the single-input operation by integrating with 180° hybrid coupler on the modulator substrate. Modulation signals were applied to each modulation electrode by the 180° hybrid coupler to set the chirp parameters of two MZMs of the DPMZM. The properties of the fabricated modulator were measured by using 10GHz two-tone signals. The performance of the IMD3 compensation agreed with that in the calculation. It was confirmed that the IMD3 compensation could be realized even by the fabricated modulator structure.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E103-C No.11 pp.653-660
- Publication Date
- 2020/11/01
- Publicized
- 2020/06/05
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.2019OCP0002
- Type of Manuscript
- Special Section PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
- Category
Authors
Daichi FURUBAYASHI
University of Hyogo
Yuta KASHIWAGI
University of Hyogo
Takanori SATO
University of Hyogo
Tadashi KAWAI
University of Hyogo
Akira ENOKIHARA
University of Hyogo
Naokatsu YAMAMOTO
National Institute of Information and Communications Technology
Tetsuya KAWANISHI
National Institute of Information and Communications Technology,Waseda University
Keyword
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Daichi FURUBAYASHI, Yuta KASHIWAGI, Takanori SATO, Tadashi KAWAI, Akira ENOKIHARA, Naokatsu YAMAMOTO, Tetsuya KAWANISHI, "Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation" in IEICE TRANSACTIONS on Electronics,
vol. E103-C, no. 11, pp. 653-660, November 2020, doi: 10.1587/transele.2019OCP0002.
Abstract: A new structure of the electro-optic modulator to compensate the third-order intermodulation distortion (IMD3) is introduced. The modulator includes two Mach-Zehnder modulators (MZMs) operating with frequency chirp and the two modulated outputs are combined with an adequate phase difference. We revealed by theoretical analysis and numerical calculations that the IMD3 components in the receiver output could be selectively suppressed when the two MZMs operate with chirp parameters of opposite signs to each other. Spectral power of the IMD3 components in the proposed modulator was more than 15dB lower than that in a normal Mach-Zehnder modulator at modulation index between 0.15π and 0.25π rad. The IMD3 compensation properties of the proposed modulator was experimentally confirmed by using a dual parallel Mach-Zehnder modulator (DPMZM) structure. We designed and fabricated the modulator with the single-chip structure and the single-input operation by integrating with 180° hybrid coupler on the modulator substrate. Modulation signals were applied to each modulation electrode by the 180° hybrid coupler to set the chirp parameters of two MZMs of the DPMZM. The properties of the fabricated modulator were measured by using 10GHz two-tone signals. The performance of the IMD3 compensation agreed with that in the calculation. It was confirmed that the IMD3 compensation could be realized even by the fabricated modulator structure.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2019OCP0002/_p
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@ARTICLE{e103-c_11_653,
author={Daichi FURUBAYASHI, Yuta KASHIWAGI, Takanori SATO, Tadashi KAWAI, Akira ENOKIHARA, Naokatsu YAMAMOTO, Tetsuya KAWANISHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation},
year={2020},
volume={E103-C},
number={11},
pages={653-660},
abstract={A new structure of the electro-optic modulator to compensate the third-order intermodulation distortion (IMD3) is introduced. The modulator includes two Mach-Zehnder modulators (MZMs) operating with frequency chirp and the two modulated outputs are combined with an adequate phase difference. We revealed by theoretical analysis and numerical calculations that the IMD3 components in the receiver output could be selectively suppressed when the two MZMs operate with chirp parameters of opposite signs to each other. Spectral power of the IMD3 components in the proposed modulator was more than 15dB lower than that in a normal Mach-Zehnder modulator at modulation index between 0.15π and 0.25π rad. The IMD3 compensation properties of the proposed modulator was experimentally confirmed by using a dual parallel Mach-Zehnder modulator (DPMZM) structure. We designed and fabricated the modulator with the single-chip structure and the single-input operation by integrating with 180° hybrid coupler on the modulator substrate. Modulation signals were applied to each modulation electrode by the 180° hybrid coupler to set the chirp parameters of two MZMs of the DPMZM. The properties of the fabricated modulator were measured by using 10GHz two-tone signals. The performance of the IMD3 compensation agreed with that in the calculation. It was confirmed that the IMD3 compensation could be realized even by the fabricated modulator structure.},
keywords={},
doi={10.1587/transele.2019OCP0002},
ISSN={1745-1353},
month={November},}
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TY - JOUR
TI - Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation
T2 - IEICE TRANSACTIONS on Electronics
SP - 653
EP - 660
AU - Daichi FURUBAYASHI
AU - Yuta KASHIWAGI
AU - Takanori SATO
AU - Tadashi KAWAI
AU - Akira ENOKIHARA
AU - Naokatsu YAMAMOTO
AU - Tetsuya KAWANISHI
PY - 2020
DO - 10.1587/transele.2019OCP0002
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E103-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2020
AB - A new structure of the electro-optic modulator to compensate the third-order intermodulation distortion (IMD3) is introduced. The modulator includes two Mach-Zehnder modulators (MZMs) operating with frequency chirp and the two modulated outputs are combined with an adequate phase difference. We revealed by theoretical analysis and numerical calculations that the IMD3 components in the receiver output could be selectively suppressed when the two MZMs operate with chirp parameters of opposite signs to each other. Spectral power of the IMD3 components in the proposed modulator was more than 15dB lower than that in a normal Mach-Zehnder modulator at modulation index between 0.15π and 0.25π rad. The IMD3 compensation properties of the proposed modulator was experimentally confirmed by using a dual parallel Mach-Zehnder modulator (DPMZM) structure. We designed and fabricated the modulator with the single-chip structure and the single-input operation by integrating with 180° hybrid coupler on the modulator substrate. Modulation signals were applied to each modulation electrode by the 180° hybrid coupler to set the chirp parameters of two MZMs of the DPMZM. The properties of the fabricated modulator were measured by using 10GHz two-tone signals. The performance of the IMD3 compensation agreed with that in the calculation. It was confirmed that the IMD3 compensation could be realized even by the fabricated modulator structure.
ER -
English
