75-km SMF transmission of optical 16 QAM signal generated by a monolithic quad-parallel Mach-Zehnder optical modulator

Akito Chiba; Takahide Sakamoto; Tetsuya Kawanishi; Kaoru Higuma; Masaaki Sudo; Junichiro Ichikawa

doi:10.1109/LPT.2011.2148703

75-km SMF transmission of optical 16 QAM signal generated by a monolithic quad-parallel Mach-Zehnder optical modulator

Akito Chiba, Takahide Sakamoto, Tetsuya Kawanishi, Kaoru Higuma, Masaaki Sudo, Junichiro Ichikawa

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We demonstrate 75-km single-mode fiber transmission of a 40-Gb/s optical 16-level quadrature amplitude modulation (16QAM) signal generated by a quad-parallel MachZehnder optical modulator (QPMZM), where four MachZehnder structures are embedded in parallel monolithically on a lithium niobate substrate. Owing to the optical 16QAM signal generation method based on the coherent superposition in the QPMZM and improved coherent receiver utilizing digital filters, improvement of receiver sensitivity has been achieved as well. The experimentally obtained receiver sensitivity for near the forward-error correction limit and power penalty due to transmission are experimentally evaluated as 16.3 dB and about 2-3 dB, respectively.

Original language	English
Article number	5759068
Pages (from-to)	977-979
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	23
Issue number	14
DOIs	https://doi.org/10.1109/LPT.2011.2148703
Publication status	Published - 2011 Jul 4
Externally published	Yes

Keywords

Coherent superposition
lithium niobate
monolithic quad-parallel MachZehnder optical modulator (QPMZM)
optical quadrature amplitude modulation (QAM)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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75-km SMF transmission of optical 16 QAM signal generated by a monolithic quad-parallel Mach-Zehnder optical modulator. / Chiba, Akito; Sakamoto, Takahide; Kawanishi, Tetsuya; Higuma, Kaoru; Sudo, Masaaki; Ichikawa, Junichiro.

In: IEEE Photonics Technology Letters, Vol. 23, No. 14, 5759068, 04.07.2011, p. 977-979.

Research output: Contribution to journal › Article › peer-review

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abstract = "We demonstrate 75-km single-mode fiber transmission of a 40-Gb/s optical 16-level quadrature amplitude modulation (16QAM) signal generated by a quad-parallel MachZehnder optical modulator (QPMZM), where four MachZehnder structures are embedded in parallel monolithically on a lithium niobate substrate. Owing to the optical 16QAM signal generation method based on the coherent superposition in the QPMZM and improved coherent receiver utilizing digital filters, improvement of receiver sensitivity has been achieved as well. The experimentally obtained receiver sensitivity for near the forward-error correction limit and power penalty due to transmission are experimentally evaluated as 16.3 dB and about 2-3 dB, respectively.",

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AU - Sudo, Masaaki

AU - Ichikawa, Junichiro

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