Low facet reflectivity in SOAs is essential for suppressing gain ripple. Low residual reflectivity can be realized by tilting the output waveguide with respect to the facet and by applying wide waveguides. Since wide waveguides result in higher-order mode reflections with significant reflection coefficients, these higher-order modes must be filtered out. We present numerical and experimental results on ridge waveguide SOAs which have been monolithically integrated with passive ridge waveguides with mode filters. As a result, we obtained a residual reflectivity lower than -30 dB without anti-reflection coating.
|Title of host publication||Proceedings of the 6th annual symposium of the IEEE/LEOS Benelux Chapter, 2 December 2001, Brussels, Belgium|
|Editors||F. Berghmans, H. Thienpont, J. Danckaert, L. Desmet|
|Place of Publication||Brussels, Belgium|
|Publication status||Published - 2001|
|Event||6th Annual Symposium of the IEEE/LEOS Benelux Chapter - Brussels, Belgium|
Duration: 3 Dec 2001 → 3 Dec 2001
Conference number: 6
|Conference||6th Annual Symposium of the IEEE/LEOS Benelux Chapter|
|Period||3/12/01 → 3/12/01|
Broeke, R. G., Binsma, J. J. M., Geemert, van, M., Vries, de, T., Oei, Y. S., Leijtens, X. J. M., & Smit, M. K. (2001). Monolithical integration of semiconductor optical amplifiers and passive modefilters for low facet reflectivity. In F. Berghmans, H. Thienpont, J. Danckaert, & L. Desmet (Eds.), Proceedings of the 6th annual symposium of the IEEE/LEOS Benelux Chapter, 2 December 2001, Brussels, Belgium (pp. 57-61). IEEE/LEOS.