Open AccessDFB semiconductor lasers based on reconstruction-equivalent-chirp technology
Author(s) -
Yitang Dai,
Xiangfei Chen
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.002348
Subject(s) - laser , optics , semiconductor laser theory , chirp , semiconductor , holography , materials science , distributed feedback laser , phase (matter) , optoelectronics , physics , quantum mechanics
A distributed feedback (DFB) semiconductor laser with equivalent phase shifts and chirps is proposed for the first time to our knowledge and is investigated numerically. As an example, it is shown that the desired lambda/4 phase shift in a phase-shifted laser can be obtained equivalently by a specially designed sampling structure instead of an actual phase shift, while the external characteristics are unchanged. This novel DFB structure is advantageous in that it can be fabricated by standard holographic technology. Hence, the proposed scheme is expected to provide a low-cost method for fabricating a high-performance DFB semiconductor laser with complex structures.