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首页> 外文期刊>Journal of the Optical Society of America, B. Optical Physics >Theoretical investigation of threshold properties of purely and partly gain-coupled distributed-feedback semiconductor lasers with stepwise constant coupling coefficients
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Theoretical investigation of threshold properties of purely and partly gain-coupled distributed-feedback semiconductor lasers with stepwise constant coupling coefficients

机译：具有逐步恒定耦合系数的纯和部分增益耦合的分布式反馈半导体激光器阈值特性的理论研究

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摘要

A basic analysis of complex-coupled distributed-feedback semiconductor lasers with stepwise constant coupling coefficients kappa is derived. Solving coupled-wave equations at threshold reveals that the longitudinal distribution of kappa as well as the relative amount of index and gain coupling plays a decisive role in the modal and spatial (internal fields) properties of complex-coupled structures. The standing-wave effect, extended to multisection devices, and the concept of apparent absorption induced by spatially dependent kappa can explain the discrepancies between uniformly and nonuniformly complex-coupled structures. The complex-coupling profile is also discussed with respect to its influence on spatial hole burning and threshold gain margin, the usual criteria for optimizing sources in optical fiber telecommunication systems. (C) 1998 Optical Society of America [S0740-3224(98)01710-X] OCIS codes: 130.0250, 140.5960, 140.3490, 230.1480. [References: 26]
机译：推导了具有逐步恒定耦合系数kappa的复耦合分布反馈半导体激光器的基本分析。在阈值处求解耦合波方程表明，κ的纵向分布以及折射率和增益耦合的相对量在复杂耦合结构的模态和空间（内部场）特性中起着决定性的作用。扩展到多部分装置的驻波效应，以及由空间相关的kappa引起的表观吸收的概念可以解释均匀和非均匀复杂耦合结构之间的差异。还讨论了复耦合轮廓对空间烧孔和阈值增益裕度的影响，这是优化光纤电信系统中光源的常用标准。 （C）1998年美国光学学会[S0740-3224（98）01710-X] OCIS代码：130.0250、140.5960、140.3490、230.1480。 [参考：26]

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