λ/4-shifted DFB laser/electroabsorption modulator integrated light source for multigigabit transmission

Masatoshi Suzuki, Hideaki Tanaka, Hidenori Taga, Shu Yamamoto, Yuichi Matsushima

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

High-speed, low-chirp, and low voltage driving characteristics of 1.55-μm λ/4-shifted distributed-feedback (DFB) laser/InGaAsP electroabsorption modulator integrated light sources are reported. By optimization of the composition and thickness of the modulator waveguide, the driving voltage for a 10-dB extinction ratio was reduced to 1.4-3V, depending on the modulator length in the range of 240-125 μm. High-speed modulation up to 10-Gb/s NRZ modulation was achieved by the integrated device with a 125-μm modulator length. The linewidth enhancement factor of the integrated modulator was estimated to be 0.15-0.48. A 2.4-Gb/s-135-km conventional fiber transmission using the integrated light source driven by less than 1Vp-p was achieved with no power penalty. Successful conventional fiber transmission over 100 km at 5 Gb/s using the integrated light source was also demonstrated.

Original languageEnglish
Pages (from-to)90-95
Number of pages6
JournalJournal of Lightwave Technology
Volume10
Issue number1
DOIs
Publication statusPublished - 1992 Jan
Externally publishedYes

Fingerprint

Electroabsorption modulators
Distributed feedback lasers
distributed feedback lasers
Modulators
Light sources
modulators
light sources
Modulation
high speed
Fibers
Electric potential
modulation
Linewidth
fibers
chirp
Waveguides
penalties
low voltage
extinction
waveguides

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

λ/4-shifted DFB laser/electroabsorption modulator integrated light source for multigigabit transmission. / Suzuki, Masatoshi; Tanaka, Hideaki; Taga, Hidenori; Yamamoto, Shu; Matsushima, Yuichi.

In: Journal of Lightwave Technology, Vol. 10, No. 1, 01.1992, p. 90-95.

Research output: Contribution to journalArticle

Suzuki, Masatoshi ; Tanaka, Hideaki ; Taga, Hidenori ; Yamamoto, Shu ; Matsushima, Yuichi. / λ/4-shifted DFB laser/electroabsorption modulator integrated light source for multigigabit transmission. In: Journal of Lightwave Technology. 1992 ; Vol. 10, No. 1. pp. 90-95.
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