N over N cascode push pull laser driver in 130nm CMOS enabling 20Gb/s optical interconnection with Mach-Zehnder modulator

Content Provider	Semantic Scholar
Author	Liu, Shenghao Thomson, Dave J. Wilson, Peter Reed, Graham T.
Copyright Year	2015
Abstract	Introduction: In the field of Silicon Photonics, an optical interconnection link using electro-absorption (EA) and a Mach-Zehnder modulator (MZM) is common and well researched. In the area of electrical modeling, most of these modulators are treated as transmission lines. Previous designs [2], [3] and [5] use a current-mode logic circuit with resistive loads which can generate a high voltage swing on output with good impedance matching performance, however, the problem is that most of these designs require external biasing system (such as a biasing tee) to be integrated with an optical modulator. For interconnection applications, the laser driver design is expected to be lowcost and compact-integration. This paper presents a laser driver providing 20Gbits/s data rate transmission for a 50Ω MZM at low cost and low power. The laser driver and MZM are integrated using a multiple die package (bond wires or flip chip), without the need for additional offchip biasing circuitry.
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Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article