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Low-voltage surface-normal electroabsorption modulators
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DOI：10.1364/OL.441812.png)
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Surface-normal electroabsorption modulators (SNEAMs) are appealing for short-reach communication systems because of their outstanding properties, such as ultrawide bandwidth and polarization-insensitive response; however, due to their small active volumes, large voltage swings are typically required to obtain the best performance. Here we propose and demonstrate a novel, to the best of our knowledge, design that dramatically reduces the voltage needed by SNEAMs and significantly increases their extinction ratio. By shrinking the multiple quantum well stack of SNEAMs to the minimum and by optimizing their reflectivity with dielectric coatings of suitable refractive index and thickness, we obtain modulators that require drive voltages of only 1 - 2(PP). We show that these novel devices largely outperform conventional SNEAMs. (C) 2021 Optical Society of America
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GB/S
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3.3
论文数:
4.0W
被引数:
7.6W
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