| 摘要 |
<p>The present document relates to sampled gratings, in particular interleaved sampled-grating. Furthermore, the present document relates to wide-range tunable semiconductor lasers using such interleaved sampled gratings. A Bragg reflector (600) is described, the reflector (600) comprising a number N of interleaved sampled gratings (200), wherein the sampled gratings (200) have a grating pitch › i , a segment with grating (601, 602, 603) of length L G,i and a number of grating periods (201) L G,i /› i within the segment with grating (601, 602, 603), with i=0,...,N-1 and N>1, respectively. The sampled gratings (200) have a common sampling period (604) of length L s ; and the number of grating periods (201) within the segments with grating (601, 602, 603) of at least two sampled gratings (200) are different.</p> |
