Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation

Hiromu Sato, Hiroki Miura, Feng Qiu, Andrew Mark Spring, Tsubasa Kashino, Takamasa Kikuchi, Masaaki Ozawa, Hideyuki Nawata, Keisuke Odoi, Shiyoshi Yokoyama

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An electro-optic (EO) polymer waveguide using an ultra-thin silicon hybrid has been designed and fabricated. The silicon core has the thickness of 50 nm and a width of 5 μm. The waveguide was completed after covering the cladding with the high temperature stable EO polymer. We have demonstrated a low half-wavelength voltage of 0.9 V at the wavelength of 1.55 μm by using a Mach-Zehnder interference modulator with TM mode operation. The measured modulation corresponded to an effective in-device EO coefficient of 165 pm/V. By utilizing the traveling-wave electrode on the modulator the high-frequency response was tested up to 40 GHz. The 3 dB modulation bandwidth was measured to be 23 GHz. In addition, the high frequency sideband spectral measurement revealed that a linear response of the modulation index against the RF power was confirmed up to 40 GHz signal.

Original languageEnglish
Pages (from-to)768-775
Number of pages8
JournalOptics Express
Volume25
Issue number2
DOIs
Publication statusPublished - Jan 23 2017

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low voltage
electro-optics
modulators
broadband
interference
modulation
polymers
silicon
waveguides
sidebands
wavelengths
traveling waves
frequency response
coverings
bandwidth
electrodes
electric potential
coefficients

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation. / Sato, Hiromu; Miura, Hiroki; Qiu, Feng; Spring, Andrew Mark; Kashino, Tsubasa; Kikuchi, Takamasa; Ozawa, Masaaki; Nawata, Hideyuki; Odoi, Keisuke; Yokoyama, Shiyoshi.

In: Optics Express, Vol. 25, No. 2, 23.01.2017, p. 768-775.

Research output: Contribution to journalArticle

Sato, Hiromu ; Miura, Hiroki ; Qiu, Feng ; Spring, Andrew Mark ; Kashino, Tsubasa ; Kikuchi, Takamasa ; Ozawa, Masaaki ; Nawata, Hideyuki ; Odoi, Keisuke ; Yokoyama, Shiyoshi. / Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation. In: Optics Express. 2017 ; Vol. 25, No. 2. pp. 768-775.
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AU - Kashino, Tsubasa

AU - Kikuchi, Takamasa

AU - Ozawa, Masaaki

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