Monolithic 1 × 8 DWDM silicon optical transmitter using an arrayed-waveguide grating and electro-absorption modulators for switch fabrics in intra-data-center interconnects

Uiseok Jeong, Dong Ho Lee, Kyungwoon Lee, Jung Ho Park

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, we propose an eight-channel monolithic optical transmitter using silicon electro-absorption modulators (EAMs) based on free-carrier injection by Schottky junctions. The transmitter consists of a 1 × 8 silicon arrayed-waveguide grating (AWG) and eight 500-×m-long EAMs on a 5.41 × 2.84 mm2 footprint. It generates eight-channel dense wavelength-division multiplexing (DWDM) outputs with 1.33 nm channel spacing (D_) in the C-band from a single broadband light source and modulates each channel with over 3 dB modulation depth at 6 V peak-to-peak. The experimental results showed that the feasibility of a homogeneous silicon DWDM transmitter with a single light source for switch fabrics in intra-data-center interconnects over heterogeneous integration with regards to more complementary metal–oxide–semiconductor (CMOS) compatibility.

Original languageEnglish
Article number991
JournalMicromachines
Volume11
Issue number11
DOIs
Publication statusPublished - 2020 Nov

Keywords

  • AWG
  • Electro-absorption
  • Modulator
  • Optoelectronics
  • Silicon
  • Transmitter
  • Waveguide

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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