Delay of light in an optical bottle resonator with nanoscale radius variation: dispersionless, broadband, and low-loss

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It is shown theoretically that an optical bottle resonator with a nanoscale radius variation can perform a multinanosecond long dispersionless delay of light in a nanometer-order bandwidth with minimal losses. Experimentally, a 3 mm long resonator with a 2.8 nm deep semiparabolic radius variation is fabricated from a 19??µm radius silica fiber with a subangstrom precision. In excellent agreement with theory, the resonator exhibits the impedance-matched 2.58 ns (3 bytes) delay of 100 ps pulses with 0.44??dB/ns intrinsic loss. This is a miniature slow light delay line with the record large delay time, record small transmission loss, dispersion, and effective speed of light.



Original languageEnglish
Article number163901
Number of pages5
JournalPhysical Review Letters
Issue number16
Publication statusPublished - 17 Oct 2013

Bibliographic note

© 2013 American Physical Society. Delay of Light in an Optical Bottle Resonator with Nanoscale Radius Variation: Dispersionless, Broadband, and Low Loss. M. Sumetsky. Phys. Rev. Lett. 111, 163901 – Published 17 October 2013


  • optical bottle resonator , miniature slow light delay line

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