Thermally tunable silicon racetrack resonators with ultralow tuning power | Zendy

Po Dong | Zendy; Wei Qian | Zendy; Hong Liang | Zendy; Roshanak Shafiiha | Zendy; Dazeng Feng | Zendy; Guoliang Li | Zendy; J. E. Cunningham | Zendy; Ashok V. Krishnamoorthy | Zendy; Mehdi Asghari | Zendy

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Thermally tunable silicon racetrack resonators with ultralow tuning power

Author(s) -

Po Dong,

Wei Qian,

Hong Liang,

Roshanak Shafiiha,

Dazeng Feng,

Guoliang Li,

J. E. Cunningham,

Ashok V. Krishnamoorthy,

Mehdi Asghari

Publication year - 2010

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.020298

Subject(s) - resonator , materials science , silicon , undercut , optoelectronics , free spectral range , optics , multiplexing , hybrid silicon laser , silicon photonics , wavelength , electronic engineering , physics , engineering , composite material

We present thermally tunable silicon racetrack resonators with an ultralow tuning power of 2.4 mW per free spectral range. The use of free-standing silicon racetrack resonators with undercut structures significantly enhances the tuning efficiency, with one order of magnitude improvement of that for previously demonstrated thermo-optic devices without undercuts. The 10%-90% switching time is demonstrated to be ~170 µs. Such low-power tunable micro-resonators are particularly useful as multiplexing devices and wavelength-tunable silicon microcavity modulators.

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