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Compact nanomechanical plasmonic phase modulators [Ultracompact nano-mechanical plasmonic phase modulators]

Journal Article · · Nature Photonics
 [1];  [2];  [3];  [3];  [1];  [4]
  1. Rutgers, the State Univ. of New Jersey, Piscataway, NJ (United States)
  2. Univ. of Colorado at Colorado Springs, Colorado, Springs, CO (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

Highly confined optical energy in plasmonic devices is advancing miniaturization in photonics. However, for mode sizes approaching ≈10 nm, the energy increasingly shifts into the metal, raising losses and hindering active phase modulation. Here, we propose a nanoelectromechanical phase-modulation principle exploiting the extraordinarily strong dependence of the phase velocity of metal–insulator–metal gap plasmons on dynamically variable gap size. We experimentally demonstrate a 23-μm-long non-resonant modulator having a 1.5π rad range, with 1.7 dB excess loss at 780 nm. Analysis shows that by simultaneously decreasing the gap, length and width, an ultracompact-footprint π rad phase modulator can be realized. This is achieved without incurring the extra loss expected for plasmons confined in a decreasing gap, because the increasing phase-modulation strength from a narrowing gap offsets rising propagation losses. Here, such small, high-density electrically controllable components may find applications in optical switch fabrics and reconfigurable plasmonic optics.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Institute of Standards and Technology (NIST); Air Force Research Laboratory - Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1239326
Journal Information:
Nature Photonics, Journal Name: Nature Photonics Vol. 9; ISSN 1749-4885
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (13)

Spectral Shifting in Extraordinary Optical Transmission by Polarization-Dependent Surface Plasmon Coupling journal November 2019
Nanomechanical motion transduction with a scalable localized gap plasmon architecture journal December 2016
Nano-opto-electro-mechanical systems journal January 2018
Plasmonic phase modulator based on novel loss-overcompensated coupling between nanoresonator and waveguide journal January 2016
Miniature Surface Plasmon Polariton Amplitude Modulator by Beat Frequency and Polarization Control journal August 2016
Low-voltage MEMS optical phase modulators and switches on a indium phosphide membrane on silicon journal December 2019
High-speed plasmonic modulator in a single metal layer journal November 2017
Nano–opto-electro-mechanical switches operated at CMOS-level voltages journal November 2019
Design and modeling of an ultra-compact 2x2 nanomechanical plasmonic switch journal January 2015
Electrically tunable plasmomechanical oscillators for localized modulation, transduction, and amplification journal January 2018
High-speed plasmonic modulator in a single metal layer text January 2017
Design and modeling of an ultra-compact 2x2 nanomechanical plasmonic switch text January 2014
Nano-Opto-Electro-Mechanical Systems text January 2018

Figures / Tables (7)


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