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Optical Engineering

Comprehensive vertical-cavity surface-emitting laser model for optical interconnect transceiver circuit design
Author(s): Binhao Wang; Wayne V. Sorin; Samuel Palermo; Michael R. T. Tan
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Paper Abstract

Directly modulated vertical-cavity surface-emitting lasers (VCSELs) are commonly used in short-reach optical interconnect applications. To enable efficient optical interconnect transceiver systems operating at data rates up to 25  Gb/s and beyond, cosimulation environments, which allow for the optimization of driver circuitry with accurate compact VCSEL models, are necessary. A comprehensive VCSEL model, which captures thermally dependent electrical and optical dynamics and provides direct current, small-, and large-signal simulation capabilities with self-consistency, is presented. The device’s electrical behavior is described with an equivalent circuit, which captures both large-signal operation and electrical parasitics, while the optical response is captured with a rate-equation-based model. Bias and temperature dependencies are incorporated into both key electrical and optical model parameters. Experimental verification of the model is performed at 25  Gb/s with a 990-nm VCSEL to study the impact of bias current level and substrate temperature.

Paper Details

Date Published: 8 December 2016
PDF: 9 pages
Opt. Eng. 55(12) 126103 doi: 10.1117/1.OE.55.12.126103
Published in: Optical Engineering Volume 55, Issue 12
Show Author Affiliations
Binhao Wang, Texas A&M Univ. (United States)
Hewlett-Packard Co. (United States)
Wayne V. Sorin, Hewlett-Packard Labs. (United States)
Samuel Palermo, Texas A&M Univ. (United States)
Michael R. T. Tan, Hewlett-Packard Labs. (United States)

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