Abstract
Modulation bandwidth enhancement of an optically controlled single-mode semiconductor laser is achieved by introducing an external cavity into the laser. A calculation based on a rate equation model shows that the 3-dB bandwidth of the optically controlled external cavity laser (OC-ECL) can be substantially enhanced by controlling the feedback light intensity and phase properly. A broad 3-dB bandwidth of 59 GHz is experimentally confirmed by using the fabricated OC-ECL. The results suggest that a combination of cross-gain modulation and photon-photon resonance is suitable to enhance the modulation bandwidth of semiconductor lasers.
| Original language | English |
|---|---|
| Article number | 7457598 |
| Journal | IEEE Journal of Quantum Electronics |
| Volume | 52 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2016 Jun |
Keywords
- cross-gain modulation
- photon-photon resonance
- semiconductor lasers
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Mieda, S., Yokota, N., Kobayashi, W., & Yasaka, H. (2016). Ultra-Wide-Bandwidth Optically Controlled DFB Laser With External Cavity. IEEE Journal of Quantum Electronics, 52(6), [7457598]. https://doi.org/10.1109/JQE.2016.2557489