Analysis of optically pumped compact laterally coupled distributed feedback lasers with three symmetric defect regions | Zendy

Haroldo T. Hattori | Zendy; Hark Hoe Tan | Zendy; C. Jagadish | Zendy

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Analysis of optically pumped compact laterally coupled distributed feedback lasers with three symmetric defect regions

Author(s) -

Haroldo T. Hattori,

Hark Hoe Tan,

C. Jagadish

Publication year - 2007

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.2800285

Subject(s) - laser , optics , optoelectronics , materials science , semiconductor laser theory , distributed feedback laser , power (physics) , quantum dot laser , waveguide , slope efficiency , single mode optical fiber , field (mathematics) , physics , fiber laser , mathematics , quantum mechanics , pure mathematics

This article analyzes compact laterally coupled distributed feedback (DFB) lasers with three defect regions. These devices are more flexible and smaller than conventional DFB lasers, having typical lengths between 20 and 50μm and a width less than 1μm (lateral gratings are inserted in a single-mode waveguide). We optimize the defect regions to achieve an improved performance. In other words, an adequate choice of phase shifts may lead to single-mode operation, lower threshold optical power, higher quantum differential efficiency, and more uniform field distribution. This device is designed to operate under optical pumping.

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