Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination

Aharon J. Agranat; Sagi Frishman; Yehudit Garcia; Daniel Rosenthal

doi:10.1117/12.2546274

Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination

Aharon J. Agranat, Sagi Frishman, Yehudit Garcia, Daniel Rosenthal

The Institute of Applied Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A method for creating photorefractive electroholographic gratings with sustained operational longevity is presented and demonstrated. The method circumvents the thermal decay and erasure during readout characteristic of photorefractive devices by augmenting the device with a built-in mechanism that writes and periodically and/or continuously refreshes the space-charge gratings which are the core elements of such devices. The mechanism was demonstrated in a slab waveguide constructed in a KLTN:Cu crystal. The space-charge grating was created by illuminating the slab waveguide through a binary grating mask deposited on top of the surface of the crystal by incoherent illumination from a LED. The electroholographic performance manifested by the grating was similar to that of gratings constructed by interfering beams. This makes electroholography to be the basis for a viable technology for performing wavelength selective switching and electrical wavelength tuning at the device level, and enables their assembly in integrated photonic circuits.

Original language	English
Title of host publication	Optical Components and Materials XVII
Editors	Shibin Jiang, Michel J. F. Digonnet
Publisher	SPIE
ISBN (Electronic)	9781510633155
DOIs	https://doi.org/10.1117/12.2546274
State	Published - 2020
Event	Optical Components and Materials XVII 2020 - San Francisco, United States Duration: 4 Feb 2020 → 6 Feb 2020

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11276
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Optical Components and Materials XVII 2020
Country/Territory	United States
City	San Francisco
Period	4/02/20 → 6/02/20

Bibliographical note

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keywords

Electrical wavelength tuning
Electro-optical device
Electroholography
Integrated photonic circuit
Photorefractive effect
Volume holograms
Wavelength routing
Wavelength selective switching

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10.1117/12.2546274

Cite this

Agranat, A. J., Frishman, S., Garcia, Y., & Rosenthal, D. (2020). Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination. In S. Jiang, & M. J. F. Digonnet (Eds.), Optical Components and Materials XVII Article 1127603 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11276). SPIE. https://doi.org/10.1117/12.2546274

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title = "Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination",

abstract = "A method for creating photorefractive electroholographic gratings with sustained operational longevity is presented and demonstrated. The method circumvents the thermal decay and erasure during readout characteristic of photorefractive devices by augmenting the device with a built-in mechanism that writes and periodically and/or continuously refreshes the space-charge gratings which are the core elements of such devices. The mechanism was demonstrated in a slab waveguide constructed in a KLTN:Cu crystal. The space-charge grating was created by illuminating the slab waveguide through a binary grating mask deposited on top of the surface of the crystal by incoherent illumination from a LED. The electroholographic performance manifested by the grating was similar to that of gratings constructed by interfering beams. This makes electroholography to be the basis for a viable technology for performing wavelength selective switching and electrical wavelength tuning at the device level, and enables their assembly in integrated photonic circuits.",

keywords = "Electrical wavelength tuning, Electro-optical device, Electroholography, Integrated photonic circuit, Photorefractive effect, Volume holograms, Wavelength routing, Wavelength selective switching",

author = "Agranat, {Aharon J.} and Sagi Frishman and Yehudit Garcia and Daniel Rosenthal",

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Optical Components and Materials XVII 2020 ; Conference date: 04-02-2020 Through 06-02-2020",

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doi = "10.1117/12.2546274",

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Agranat, AJ, Frishman, S, Garcia, Y & Rosenthal, D 2020, Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination. in S Jiang & MJF Digonnet (eds), Optical Components and Materials XVII., 1127603, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11276, SPIE, Optical Components and Materials XVII 2020, San Francisco, United States, 4/02/20. https://doi.org/10.1117/12.2546274

Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination. / Agranat, Aharon J.; Frishman, Sagi; Garcia, Yehudit et al.
Optical Components and Materials XVII. ed. / Shibin Jiang; Michel J. F. Digonnet. SPIE, 2020. 1127603 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11276).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N1 - Publisher Copyright: © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

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Integrated electroholographic photorefractive gratings with sustained longevity by LED illumination

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