Single silicon microring resonator Mach-Zehnder modulator with low-power consumption using thermo-optic effect

Gautam, Rajdeep; Kaneshige, Hiroki; Yamada, Hitoshi; Katouf, Redouane; Arakawa, Taro; Kimura, Yasuo

doi:10.1109/ipcon.2012.6359253

Cited by 2 publications

(1 citation statement)

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“…10, unbiased MRRs are found to show slight shifts of their resonant wavelengths caused by thermal leakage. 26,27) For example, when the electric power was supplied to the microheater of Ring 3, the average wavelength shift of Ring 1 was 7.4 pm/mW. The approximate wavelength shift ratio of 10 was observed for the selective modulation wavelength and for other resonant wavelengths of different rings deviating due to leakage.…”

Section: Cascaded Mrr-loaded Mzmmentioning

confidence: 95%

Thermo-optically driven silicon microring-resonator-loaded Mach–Zehnder modulator for low-power consumption and multiple-wavelength modulation

Gautam¹,

Kaneshige²,

Yamada³

et al. 2014

Jpn. J. Appl. Phys.

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Low-power-consumption thermo-optically controlled silicon-microring-resonator loaded Mach–Zehnder modulators (MRR-loaded MZMs) are demonstrated. We experimentally characterized a single microring and cascaded-multiple-microring resonators coupled to one arm of a Mach–Zehnder interferometer (MZI). The driving power consumption of the proposed MZM is significantly reduced owing to the enhanced phase shift in the MRR. The device was fabricated on a silicon-on-insulator (SOI) waveguide structure, and each microring is equipped with TiN microheater for thermo-optic tuning. The coupling efficiency between the microring and a busline waveguide was regulated by varying the gap between two waveguides at a directional coupler. The power consumption of single microring and cascaded MRR-loaded MZMs was approximately 0.4 and 1 mW, respectively. The phase-shift enhancement factor of up to 19 with a maximum extinction ratio of 18 dB was obtained experimentally. Multiple-wavelength operation was also demonstrated in the cascaded MRR-loaded MZM.

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Section: Cascaded Mrr-loaded Mzmmentioning

confidence: 95%