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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S2 — Mar. 12, 2012
  • pp: A293–A308

Energy consumption in optical modulators for interconnects

David A. B. Miller  »View Author Affiliations

Optics Express, Vol. 20, Issue S2, pp. A293-A308 (2012)

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We analyze energy consumption in optical modulators operated in depletion and intended for low-power interconnect applications. We include dynamic dissipation from charging modulator capacitance and net energy consumption from absorption and photocurrent, both in reverse and small forward bias. We show that dynamic dissipation can be independent of static bias, though only with specific kinds of bias circuits. We derive simple expressions for the effects of photocurrent on energy consumption, valid in both reverse and small forward bias. Though electroabsorption modulators with large reverse bias have substantial energy penalties from photocurrent dissipation, we argue that modulator diodes with thin depletion regions and operating in small reverse and/or forward bias could have little or no such photocurrent energy penalty, even conceivably being more energy-efficient than an ideal loss-less modulator.

© 2012 OSA

OCIS Codes
(200.4650) Optics in computing : Optical interconnects
(250.4110) Optoelectronics : Modulators

ToC Category:
Energy in Telecommunications

Original Manuscript: January 17, 2012
Revised Manuscript: February 24, 2012
Manuscript Accepted: February 27, 2012
Published: March 1, 2012

David A. B. Miller, "Energy consumption in optical modulators for interconnects," Opt. Express 20, A293-A308 (2012)

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