Time-Domain Analysis of Tunability and Modulation Characteristics in Coupled-Ring Reflector Laser Diode
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概要
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The characteristics of a widely tunable coupled-ring reflector laser diode are studied using a time-domain modeling approach. The coupled-ring reflector is a planar waveguide reflector which does not require distributed Bragg gratings. Instead, the coupled-ring reflector consists of a bus waveguide and two coupled ring resonators coupled to the bus. It is shown that the tuning range can be a few tens of nanometers with a side mode suppression ratio exceeding 35 dB through the adjustment of currents into the phase control sections in the rings. The coupled-ring reflector laser diode has a long effective cavity compared with conventional laser diodes. Accordingly, a broad additional resonance peak in the amplitude modulation characteristics is observed between 20 to 30 GHz, implying the extension of amplitude modulation bandwidth.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-05-25
著者
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CHUNG Youngchul
Department of Electronic Communications Eng., School of Electronics Eng., Kwangwoon University
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Kim Suhyun
Department of Electronics and Communications Engineering, Kwangwoon University, 139-701 Seoul, Korea
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Chung Youngchul
Department of Electronics and Communications Engineering, Kwangwoon University, 139-701 Seoul, Korea
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Yoon Pilhwan
Department of Electronics and Communications Engineering, Kwangwoon University, 139-701 Seoul, Korea
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