Modulator figure of merit for short reach data links

Modulator figure of merit for short reach data links

The traditional Mach-Zehnder modulator (MZM) figure of merit (FOM) has been defined as (V )/υ , and works effectively for LiNbO long haul modulators. However, for plasma dispersion based electro-optic modulators, or any modulator that has an inherent relationship between its bandwidth, required driv...

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Veröffentlicht in:Optics express 2017-10, Vol.25 (20), p.24326-24339
Hauptverfasser: Gill, D M, Xiong, C, Rosenberg, J C, Pepeljugoski, P, Orcutt, J S, Green, W M J
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container_end_page 24339
container_issue 20
container_start_page 24326
container_title Optics express
container_volume 25
creator Gill, D M
Xiong, C
Rosenberg, J C
Pepeljugoski, P
Orcutt, J S
Green, W M J
description The traditional Mach-Zehnder modulator (MZM) figure of merit (FOM) has been defined as (V )/υ , and works effectively for LiNbO long haul modulators. However, for plasma dispersion based electro-optic modulators, or any modulator that has an inherent relationship between its bandwidth, required drive voltage, and optical insertion loss/gain, this FOM is inappropriate. This is particularly true for short reach links with no optical amplification. In the following, we propose a new modulator FOM (M-FOM) based on device metrics that are essential for short-reach links, such as the peak-to-peak drive voltage, modulator rise-fall time, and relative optical modulation amplitude. Link sensitivity measurements from two MZMs that have different bandwidths and optical losses are compared using our M-FOM to demonstrate its utility. Furthermore, we present a novel application protocol of our M-FOM to provide deeper insight into the relative system impact that modulator performance has on data links with no optical amplification, by taking the ratio of M-FOMs from two modulators driven with the same radio frequency drive power.
doi_str_mv 10.1364/OE.25.024326
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title Modulator figure of merit for short reach data links
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