Yariv Amnon, Xu Yong, Mookherjea Shayan
Department of Applied Physics, 128-95, California Institute of Technology, Pasadena, California 91125, USA.
Opt Lett. 2003 Feb 1;28(3):176-8. doi: 10.1364/ol.28.000176.
We propose and analyze a new type of optical amplifier that is formed by addition of gain in the periodic cladding of a transverse Bragg resonance waveguide [Opt. Lett. 27, 936 (2002)]. Using the coupled-wave formalism, we calculate the mode profiles, the exponential gain constant, and, for comparison, the gain enhancement compared with those of conventional semiconductor optical amplifiers. In contrast with coupled-mode theory, in one-dimensional structures (e.g., the distributed-feedback laser) the exponential gain constant in the longitudinal direction is involved in both longitudinal and transverse confinement, and its solution has to be achieved self-consistently, together with the quantized guiding channel width.
我们提出并分析了一种新型光放大器，它是通过在横向布拉格共振波导的周期性包层中添加增益形成的[《光学快报》27, 936 (2002)]。利用耦合波形式理论，我们计算了模式分布、指数增益常数，并且为了进行比较，还计算了与传统半导体光放大器相比的增益增强情况。与耦合模理论不同，在一维结构（例如分布反馈激光器）中，纵向的指数增益常数涉及纵向和横向限制，其解必须与量化的导波通道宽度一起自洽地获得。
