Energy consumption in optical modulators for interconnects
Energy consumption in optical modulators for interconnects
复制标题
DOI：
10.1364/oe.20.00a293
复制
发表时间：
2012-03-12
期刊：
影响因子：
3.8
通讯作者：
Miller, David A. B.
中科院分区：
文献类型：
--
作者：
Miller, David A. B.
我们分析了低功率互连应用中工作在耗尽状态下的光调制器的能量消耗。我们包括充电调制器电容的动态耗散以及吸收和光电流的净能量消耗，包括反向偏置和小正向偏置。我们证明了动态耗散可以与静态偏置无关，尽管只有特定类型的偏置电路。我们推导出了光电流对能量消耗影响的简单表达式，在反向偏置和小正向偏置下都适用。尽管具有大反向偏置的电吸收调制器由于光电流耗散而具有显著的能量损失，但我们认为，具有薄耗尽区并且工作在小的反向和/或正向偏置的调制器二极管可能具有很少或根本没有这样的光电流能量损失，甚至可以想象比理想的无损耗调制器更节能。(C)2012年美国光学学会
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. (C) 2012 Optical Society of America