Linearization of DFB laser diode by external light-injected cross-gain modulation for radio-over-fiber link

Sang Hoon Lee, Jeung Mo Kang, In Hyuk Choi, Sang Kook Han

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


A novel linearization technique of distributed-feed-back laser diode in analog optical transmitter for radio-over-fiber (RoF) link was proposed. The proposed scheme was based on a light-injection technique using cross-gain modulation effect. According to the proposed idea, a linearized RoF transmitter module was implemented and evaluated. The enhanced performance of carrier-to-noise ratio and spurious-free dynamic range were experimentally demonstrated in a wide range of radio-frequency (RF) applications. The experimental results show that the proposed scheme can be applicable for broadband RF optical transmission applications.

Original languageEnglish
Article number1650275
Pages (from-to)1545-1547
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number14
Publication statusPublished - 2006 Jul 15

Bibliographical note

Funding Information:
Manuscript received January 26, 2006; revised April 13, 2006. This work was supported by the Korea Science and Engineering Foundation in the Ministry of Science and Technology under Grant R01-2005-000-10176-0. The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: Digital Object Identifier 10.1109/LPT.2006.878161

All Science Journal Classification (ASJC) codes

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


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