Area-effective inductive peaking with interwoven inductor for high-speed laser-diode driver for optical communication system

Takeshi Kuboki, Yusuke Ohtomo, Akira Tsuchiya, Keiji Kishine, Hidetoshi Onodera

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents an area-effective bandwidth enhancement technique using interwoven inductors. Inductive peaking is a common practice for bandwidth enhancement, however the area overhead of inductors is a serious issue. We implement six or four inductors into an interwoven inductor. Furthermore parasitics of the inductors can be reduced. The proposed inductor is applied to a laser-diode driver in a 0.18 μm CMOS. Compared to conventional shunt-peaking, the proposed circuit achieves 1.6 times faster operation and 60% reduction in power consumption under the condition for the same amount of data transmission and the LD driving current. The interwoven inductor can reduce the circuit area by 26%. Parasitic capacitance in interwoven inductor is discussed. Simulation results reveal that line-to-line capacitance is a significant factor on bandwidth degradation.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE95-A
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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