Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
748390 | Solid-State Electronics | 2008 | 6 Pages |
Abstract
Using finite difference time domain (FDTD) method, we analyze static and dynamic response of non-uniform grating quarter-wavelength shift distributed feedback QWS-DFB laser with non-zero facet reflection coefficients, both for large signal transient and small signal modulation. By introducing a convex tapered grating structure for QWS-DFB laser (XTG-DFB), it is shown that single mode stability of laser enhances and laser is less sensitive to random phase of reflection coefficients. We also show that XTG-DFB laser has better small signal response in comparison with uniform grating QWS-DFB laser.
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Authors
N. Bazhdanzadeh, V. Ahmadi, H. Ghafoorifard, F. Shahshahani,