Nonlinearity of Semiconductor Mach-Zehnder Modulator for Flat Optical Frequency Comb

Nobuhide Yokota, Takahiro Miki, Koichiro Abe, Hiroshi Yasaka

研究成果: Article

8 引用 (Scopus)

抜粋

Optical frequency combs (OFCs) generated by an InP-based semiconductor Mach-Zehnder modulator (MZM) are numerically investigated. Nonlinear phase modulation induced by drive voltages applied to the MZM prove to be useful in obtaining a flat OFC. The experimentally measured intensity deviations of OFCs reported previously are quantitatively reproduced using a numerical model considering nonlinear change of refractive index and optical absorption induced by the drive voltages applied to the MZM. It is found that such nonlinearities generate a flat nine-channel (9-ch) OFC with an intensity deviation of <1 dB when a moderate RF drive voltage of <5 V is used. This flat 9-ch OFC is sustained regardless of the ratio of RF drive voltages of two arms in the MZM. Conversion efficiency is reasonably high (27%), but it is decreased by optical absorption and extinction losses in the MZM.

元の言語English
記事番号7160714
ページ(範囲)2219-2221
ページ数3
ジャーナルIEEE Photonics Technology Letters
27
発行部数21
DOI
出版物ステータスPublished - 2015 11 1

ASJC Scopus subject areas

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

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