Abstract
We demonstrate a new way to electrically tune the self-oscillation frequency of an external cavity VCSEL by changing the electrical current injected into the VCSEL, without using any mechanical moving parts. We found that for a self-oscillation frequency from 500 MHz to 4 GHz, the tuning range is up to 15% and the tuning rate is up to 800 MHz/mA. Our experiments and simulation show that the injection current tuning of self-oscillation frequency is due to a change in the VCSEL birefringence induced by changing the injection current.
Original language | English (US) |
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Article number | 6557468 |
Pages (from-to) | 1707-1710 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 25 |
Issue number | 17 |
DOIs | |
State | Published - 2013 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
Keywords
- Lasers and electrooptics
- birefringence
- electrooptic effects
- laser applications
- optical modulation
- vertical cavity surface emitting lasers