Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion

Ryota Nakamura; Katsuyuki Yamamoto; Tadashi Kawai; Akira Enokihara; Naokatsu Yamamoto; Tetsuya Kawanishi

doi:10.1109/MWSYM.2016.7539999

Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion

Ryota Nakamura, Katsuyuki Yamamoto, Tadashi Kawai, Akira Enokihara, Naokatsu Yamamoto, Tetsuya Kawanishi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.

Original language	English
Title of host publication	2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Volume	2016-August
ISBN (Electronic)	9781509006984
DOIs	https://doi.org/10.1109/MWSYM.2016.7539999
Publication status	Published - 2016 Aug 9
Event	2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States Duration: 2016 May 22 → 2016 May 27

Other

Other	2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Country	United States
City	San Francisco
Period	16/5/22 → 16/5/27

Keywords

Chirp modulation
Electro-optic modulators
Microwave circuits
Microwave photonics
Optical fiber dispersion

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/MWSYM.2016.7539999

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Cite this

Nakamura, R., Yamamoto, K., Kawai, T., Enokihara, A., Yamamoto, N., & Kawanishi, T. (2016). Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion. In 2016 IEEE MTT-S International Microwave Symposium, IMS 2016 (Vol. 2016-August). [7539999] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2016.7539999

Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion. / Nakamura, Ryota; Yamamoto, Katsuyuki; Kawai, Tadashi; Enokihara, Akira; Yamamoto, Naokatsu; Kawanishi, Tetsuya.

2016 IEEE MTT-S International Microwave Symposium, IMS 2016. Vol. 2016-August Institute of Electrical and Electronics Engineers Inc., 2016. 7539999.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nakamura, R, Yamamoto, K, Kawai, T, Enokihara, A, Yamamoto, N & Kawanishi, T 2016, Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion. in 2016 IEEE MTT-S International Microwave Symposium, IMS 2016. vol. 2016-August, 7539999, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE MTT-S International Microwave Symposium, IMS 2016, San Francisco, United States, 16/5/22. https://doi.org/10.1109/MWSYM.2016.7539999

Nakamura R, Yamamoto K, Kawai T, Enokihara A, Yamamoto N, Kawanishi T. Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion. In 2016 IEEE MTT-S International Microwave Symposium, IMS 2016. Vol. 2016-August. Institute of Electrical and Electronics Engineers Inc. 2016. 7539999 https://doi.org/10.1109/MWSYM.2016.7539999

Nakamura, Ryota ; Yamamoto, Katsuyuki ; Kawai, Tadashi ; Enokihara, Akira ; Yamamoto, Naokatsu ; Kawanishi, Tetsuya. / Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion. 2016 IEEE MTT-S International Microwave Symposium, IMS 2016. Vol. 2016-August Institute of Electrical and Electronics Engineers Inc., 2016.

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title = "Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion",

abstract = "The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.",

keywords = "Chirp modulation, Electro-optic modulators, Microwave circuits, Microwave photonics, Optical fiber dispersion",

author = "Ryota Nakamura and Katsuyuki Yamamoto and Tadashi Kawai and Akira Enokihara and Naokatsu Yamamoto and Tetsuya Kawanishi",

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AU - Enokihara, Akira

AU - Yamamoto, Naokatsu

AU - Kawanishi, Tetsuya

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N2 - The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.

AB - The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.

KW - Chirp modulation

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KW - Microwave circuits

KW - Microwave photonics

KW - Optical fiber dispersion

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