Tunable surface-normal modulators operating near 1550 nm with a high-extinction ratio at high temperatures

H. Mohseni*, W. K. Chan, H. An, A. Ulmer, D. Capewell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We present high-performance surface-normal modulators based on unique properties of stepped quantum wells at an eye-safe wavelength of 1550 nm. Fabricated devices show higher efficiency and a 7-dB higher extinction ratio compared with devices with coupled quantum-well active layers. Moreover, the energy band edge of the device can be tuned over 70 nm while maintaining a 3-dB modulation depth. Such a wide tuning range eliminates the need for a thermoelectric cooler and is a critical advantage for many applications such as unmanned aerial vehicles and dynamic optical tags. The devices show good performance up to the maximum measured temperature of 70°C.

Original languageEnglish (US)
Pages (from-to)214-216
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number1
DOIs
StatePublished - 2006

Keywords

  • Modulator
  • Optical tag
  • Quantum well
  • Stepped quantum well
  • Surface-normal
  • Tunable modulator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Tunable surface-normal modulators operating near 1550 nm with a high-extinction ratio at high temperatures'. Together they form a unique fingerprint.

Cite this