Linearity enhancement of analog optical transmitter using gain saturated reflective semiconductor optical amplifier

Yin Xing Piao, Yong Yuk Won, Sang Kook Han

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose a new linearization scheme in optical external modulator employing high-pass filter characteristic of a gain saturated reflective semiconductor optical amplifier for an analog optical transmission system. The proposed scheme is based on power level relation between fundamental signal and IMD3 signal when a radio-frequency tone is modulated, using an optical modulator at linearity region of transfer curve. Based on the proposed idea, a linearized optical transmitter module is implemented and evaluated. The proposed scheme is demonstrated and verified using a small scale test-bed. Both carrier-to-interference ratio and spurious-free dynamic range are improved.

Original languageEnglish
Pages (from-to)2100-2103
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume51
Issue number9
DOIs
Publication statusPublished - 2009 Sep

All Science Journal Classification (ASJC) codes

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

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