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A Novel Multisection Distributed Feedback Laser with Varied Ridge Width for Self-Pulsation Generation |
| WAN Qin;SUN Chang-Zheng;XIONG Bing;WANG Jian;LUO Yi |
| State Key Laboratory on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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WAN Qin, SUN Chang-Zheng, XIONG Bing et al 2006 Chin. Phys. Lett. 23 2753-2755 |
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Abstract A novel ridge-waveguide multisection (MS) distributed feedback (DFB) laser, which consists of two identical DFB sections but different ridge widths, is proposed to generate beating-type self-pulsations (SPs). The spatiotemporal dynamic response of such a multisection DFB laser is calculated based on a large-signal travelling-wave model. Self-pulsating output at about 150GHz is predicted, and evidences for the beating mechanism of the SPs are provided. To the best of our knowledge, this is the first report on SP generated by MS-DFB lasers with varied ridge width. Compared to other alternatives, such devices are much easier to implement and also enjoy the advantages of lower cost and higher design freedom.
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| Keywords:
42.55.Px
85.60.Bt
42.60.Da
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Published: 01 October 2006
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| PACS: |
42.55.Px
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(Semiconductor lasers; laser diodes)
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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