发明名称 |
Two-section complex coupled distributed feedback semiconductor laser with enhanced wavelength tuning range |
摘要 |
<p>A complex coupled (gain coupled or loss coupled) distributed feedback (DFB) semiconductor laser, having two sections axially distinct along a cavity length direction, and two excitation means for independent pumping of corresponding sections of the laser in a master and slave type of pumping control, is provided. An extended continuous wavelength tuning range of the laser is obtained by selectively activating a left Bragg mode or a right Bragg mode across the stop band of the laser as a dominant lasing mode by the master and slave type of current injection control into different sections of the laser to alternate gain coupling and loss coupling mechanisms of laser operation, and further tuning a wavelength around the activated Bragg mode. Methods of operating the laser, enhancing a tuning range, and fabricating thereof are provided. <IMAGE></p> |
申请公布号 |
EP0903820(A2) |
申请公布日期 |
1999.03.24 |
申请号 |
EP19980307439 |
申请日期 |
1998.09.14 |
申请人 |
NORTEL NETWORKS LIMITED |
发明人 |
HONG, JIN;MAKINO, TOSHI;KIM, HYUNG B |
分类号 |
H01S5/00;H01S5/0625;H01S5/065;H01S5/12;(IPC1-7):H01S3/085;H01S3/103 |
主分类号 |
H01S5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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