All-optical frequency conversion using nonlinear dynamics of semiconductor lasers

Sheng Kwang Hwang, How Foo Chen, Che Yang Lin

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


When a semiconductor laser is subject to optical injection, it can enter the period-one dynamics through Hopf bifurcation. Under such nonlinear dynamics, equally and oppositely frequency-shifted optical signals from the injection emerge and are utilized for frequency conversion. Only a typical semiconductor laser is required as the conversion unit, where no pump or probe laser is necessary. The frequency shift can be continuously tuned by controlling the level or frequency of the injection. A bitor ratio down to 10-12 is observed with no or a slight power penalty for amplitude, frequency, and phase modulation at 2.5 Gbits/s, suggesting modulation format transparency of the system. Frequency down-, no-, and upconversion can be simultaneously achieved and individually selected, increasing the flexibility and reconfigurability of the system.

Original languageEnglish
Pages (from-to)812-814
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2009 Mar 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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