Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7928798 | Optics Communications | 2016 | 7 Pages |
Abstract
We propose a novel scheme for injection of assist-light into the active region of a semiconductor optical amplifier (SOA) for fast gain recovery. In the proposed scheme, the assist-light is coupled into the active region of the SOA through an adjacent channel waveguide. Numerical results based on the well established model for carrier dynamics in SOA show that the gain recovery is faster in the proposed scheme as compared to the earlier reported scheme of counter-propagating assist-light injection. Our analysis shows that a desired power profile of the assist-light can be maintained in the active region of the SOA by tailoring the coupling through suitable design of the adjacent channel waveguide. The dependence of gain recovery on the input power of the assist-light in the proposed scheme has also been studied. Under typical operating conditions, it is found that 20Â dBm of assist-light power injection in the proposed scheme is as effective as 27Â dBm of assist-light power in the counter-propagating scheme.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
V Nithin, Yogesh Kumar, M R Shenoy,