| Citation: |
Wang Lu, Xie Hongyun, Zhao Lingjuan, Pan Jiaoqing, Zhou Fan, Bian Jing, Wang Lufeng, Zhu Hongliang, Wang Wei. Investigation on Monolithic Integration of Distributed Feedback Lasers and Y-Branch for Microwave Generation。[J]. Journal of Semiconductors, 2007, 28(S1): 525-528.
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Wang L, Xie H Y, Zhao L J, Pan J Q, Zhou F, Bian J, Wang L F, Zhu H L, Wang W. Investigation on Monolithic Integration of Distributed Feedback Lasers and Y-Branch for Microwave Generation。[J]. Chin. J. Semicond., 2007, 28(S1): 525.
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Investigation on Monolithic Integration of Distributed Feedback Lasers and Y-Branch for Microwave Generation。
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Abstract
Two distributed feedback(DFB)lasers，which have the same period grating.integrated monolithically with Y. branch waveguide are designed and fabricated.The peak wavelength of 1565nm and side mode suppression ration(SMSR)of over 30dB iS realized on the Y·branch side at the driving current injected into DFB lasers separately.The two different longi. tudinal mode wavelengths are detected at the 20mA difference of the driving current simultaneously injected into two DFB lasers and the two modes can generate a microwave by beat·frequency.The microwave frequency can be rapidly tuned be. tween the range of 13 and 42GHz by varying driving current from 10 to 20mA.The Y.branch based microwave generation device of twin DFB lasers has better optical and electricalisolation compared with traditional device of two-section DFB la. sers，so it can be considered as a novel approach of beat-frequency. -
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