Electrical & Electronic Materials (E2M - 전기 전자와 첨단 소재)
- Volume 11 Issue 11
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- Pages.28-36
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- 1998
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- 2982-6268(pISSN)
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- 2982-6306(eISSN)
Dynamic analysis of widely tunable laser diodes integrated with sampled-and chirped-grating distributed Bragg reflectors and an electroabsorption modulator
- Kim, Byoung-Sung (Dept. of Electronic Communications Eng., School of Electronics Eng. Kwangwoon University) ;
- Youngchul Chung (Dept. of Electronic Communications Eng., School of Electronics Eng. Kwangwoon University) ;
- Kim, Sun-Ho (Division of Information and Electronics Korea Institute of Science and Technology)
- Published : 1998.11.01
Abstract
Widely tunable diodes integrated with periodically sampled and chirped DBR(distributed Bragg reflector) and an EA(electroabsorption) modulator are analyzed dynamically using the improved largesinal time-domain model. The tuning characteristics of sampled- and chirped-grating DBR laser diodes are demonstrated theoretically. The results of the simulation agree well with those of the experiment. And the intensity-modulation properties of the laser diodes integrated with an EA modulator are calculated. It is shown that the external modulation has the lower frequency chirp by 1/20 for the same extinction ratio than the direct modulation, and also the short pulse train can be generated using the optical gating of an EA modulator.