Direction reconfigurable nonreciprocal acousto-optic modulator on chip

Donggyu B. Sohn; Gaurav Bahl

doi:10.1063/1.5123497

Direction reconfigurable nonreciprocal acousto-optic modulator on chip

Donggyu B. Sohn
, Gaurav Bahl

Research output: Contribution to journal › Article › peer-review

Abstract

Nonreciprocal components are essential in photonic systems for protecting light sources and for signal routing functions. Acousto-optic methods to produce nonreciprocal devices offer a foundry-compatible alternative to magneto-optic solutions and are especially important for photonic integration. In this paper, we experimentally demonstrate a dynamically reconfigurable nonreciprocal acousto-optic modulator at the telecom wavelength with a peak contrast of 8 dB and a 3 dB bandwidth of 1.1 GHz. The modulator can be arranged in a multitude of reciprocal and nonreciprocal configurations by means of an external RF input. The dynamic reconfigurability of the device is enabled by a new cross-finger interdigitated piezoelectric transducer that can change the directionality of the reciprocity-breaking acoustic excitation based on the phase of the RF input. The methodology we demonstrate here may enable new avenues for direction dependent signal processing and optical isolation.

Original language	English (US)
Article number	126103
Journal	APL Photonics
Volume	4
Issue number	12
DOIs	https://doi.org/10.1063/1.5123497
State	Published - Dec 1 2019

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Computer Networks and Communications

Online availability

10.1063/1.5123497

Library availability

Discover UIUC Full Text

Cite this

@article{fc75a059ecc044f38d3667c98a46bc1c,

title = "Direction reconfigurable nonreciprocal acousto-optic modulator on chip",

abstract = "Nonreciprocal components are essential in photonic systems for protecting light sources and for signal routing functions. Acousto-optic methods to produce nonreciprocal devices offer a foundry-compatible alternative to magneto-optic solutions and are especially important for photonic integration. In this paper, we experimentally demonstrate a dynamically reconfigurable nonreciprocal acousto-optic modulator at the telecom wavelength with a peak contrast of 8 dB and a 3 dB bandwidth of 1.1 GHz. The modulator can be arranged in a multitude of reciprocal and nonreciprocal configurations by means of an external RF input. The dynamic reconfigurability of the device is enabled by a new cross-finger interdigitated piezoelectric transducer that can change the directionality of the reciprocity-breaking acoustic excitation based on the phase of the RF input. The methodology we demonstrate here may enable new avenues for direction dependent signal processing and optical isolation.",

author = "Sohn, \{Donggyu B.\} and Gaurav Bahl",

note = "This material was based on research sponsored by the Air Force Research Laboratory (AFRL) under agreement No. FA9453-16-1-0025. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of Air Force Research Laboratory (AFRL) and (DARPA) or the U.S. Government. D.B.S. would also like to acknowledge support from a U.S. National Science Foundation Graduate Research Fellowship. Experiments were carried out in part in the Frederick Seitz Materials Research Laboratory Central Research Facilities and Holonyak Micro and Nanotechnology Laboratory at the University of Illinois at Urbana, Champaign.",

year = "2019",

month = dec,

day = "1",

doi = "10.1063/1.5123497",

language = "English (US)",

volume = "4",

journal = "APL Photonics",

issn = "2378-0967",

publisher = "American Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Direction reconfigurable nonreciprocal acousto-optic modulator on chip

AU - Sohn, Donggyu B.

AU - Bahl, Gaurav

N1 - This material was based on research sponsored by the Air Force Research Laboratory (AFRL) under agreement No. FA9453-16-1-0025. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of Air Force Research Laboratory (AFRL) and (DARPA) or the U.S. Government. D.B.S. would also like to acknowledge support from a U.S. National Science Foundation Graduate Research Fellowship. Experiments were carried out in part in the Frederick Seitz Materials Research Laboratory Central Research Facilities and Holonyak Micro and Nanotechnology Laboratory at the University of Illinois at Urbana, Champaign.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Nonreciprocal components are essential in photonic systems for protecting light sources and for signal routing functions. Acousto-optic methods to produce nonreciprocal devices offer a foundry-compatible alternative to magneto-optic solutions and are especially important for photonic integration. In this paper, we experimentally demonstrate a dynamically reconfigurable nonreciprocal acousto-optic modulator at the telecom wavelength with a peak contrast of 8 dB and a 3 dB bandwidth of 1.1 GHz. The modulator can be arranged in a multitude of reciprocal and nonreciprocal configurations by means of an external RF input. The dynamic reconfigurability of the device is enabled by a new cross-finger interdigitated piezoelectric transducer that can change the directionality of the reciprocity-breaking acoustic excitation based on the phase of the RF input. The methodology we demonstrate here may enable new avenues for direction dependent signal processing and optical isolation.

AB - Nonreciprocal components are essential in photonic systems for protecting light sources and for signal routing functions. Acousto-optic methods to produce nonreciprocal devices offer a foundry-compatible alternative to magneto-optic solutions and are especially important for photonic integration. In this paper, we experimentally demonstrate a dynamically reconfigurable nonreciprocal acousto-optic modulator at the telecom wavelength with a peak contrast of 8 dB and a 3 dB bandwidth of 1.1 GHz. The modulator can be arranged in a multitude of reciprocal and nonreciprocal configurations by means of an external RF input. The dynamic reconfigurability of the device is enabled by a new cross-finger interdigitated piezoelectric transducer that can change the directionality of the reciprocity-breaking acoustic excitation based on the phase of the RF input. The methodology we demonstrate here may enable new avenues for direction dependent signal processing and optical isolation.

UR - https://www.scopus.com/pages/publications/85076530891

UR - https://www.scopus.com/pages/publications/85076530891#tab=citedBy

U2 - 10.1063/1.5123497

DO - 10.1063/1.5123497

M3 - Article

AN - SCOPUS:85076530891

SN - 2378-0967

VL - 4

JO - APL Photonics

JF - APL Photonics

IS - 12

M1 - 126103

ER -

Direction reconfigurable nonreciprocal acousto-optic modulator on chip

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this