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Optics Letters

Optics Letters


  • Vol. 12, Iss. 7 — Jul. 1, 1987
  • pp: 536–538

Mode-selective detection of optical guided waves by integrated metal–oxide–metal structures

J. B. D. Soole, H. P. Hughes, and N. Apsley  »View Author Affiliations

Optics Letters, Vol. 12, Issue 7, pp. 536-538 (1987)

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We show that a metal–oxide–metal (Al-AlOx-Al) tunnel junction fabricated directly upon a planar ion-exchange glass waveguide can be used to detect the guided radiation through evanescent coupling. Carriers photogenerated in the electrode next to the guide can be internally photoemitted over the oxide barrier to generate a photocurrent. Because of the greater metallic absorption of TM-polarized modes, the process is polarization sensitive. 32-dB TM selectivity is achieved in a simple device.

© 1987 Optical Society of America

Original Manuscript: March 6, 1987
Manuscript Accepted: April 17, 1987
Published: July 1, 1987

J. B. D. Soole, N. Apsley, and H. P. Hughes, "Mode-selective detection of optical guided waves by integrated metal–oxide–metal structures," Opt. Lett. 12, 536-538 (1987)

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