【摘要】 采用变脊宽原理和对接生长技术,设计并制作了4通道分布反馈(DFB)激光器阵列与多模干涉(MMI)耦合器、半导体光放大器(SOA)的单片集成器件。在25℃的测试温度下,激光器的阈值电流约55～60mA;当激光器注入150mA、SOA注入50mA电流时,各通道的出光功率保持在2mW以上,出射波长处于1 550nm波段,边模抑制比(SMSR)大于33dB,4通道可实现单独或同时工作。更多还原

【Abstract】 The monolithic photonic integrated circuit(PIC) is the core component in the future high-capacity,low-power consumption optical network systems.As a typical photonics integrated device,monolithically integrated multi-wavelength distributed feedback(DFB) laser array plays an important role in dense wavelength division multiplexing(DWDM) optical transmission systems.The monolithic integration of four distributed feedback lasers with a 4×1 multimode-interference(MMI) optical combiner and semiconductor optical amplifier(SOA) using varing width ridge method and butt-joint technology is proposed and demonstrated in this paper.The monolithically integrated chip is 2 500 μm long and 400 μm wide.The active and passive materials are integrated by the butt-joint technique,and the varing ridge width is used to adjust the effective index of the laser material,so that multi-wavelength emission can be achieved by normal holographic exposure.This method is simple and practical.The integrated device is tested at 25° for characterization.The average output power of 2 mW is achieved when the current of LD and semiconductor optical amplifier(SOA) is 150 mA and 50 mA,respectively.The threshold current of the device is 55-60 mA at 25 ℃.The lasing wavelength is around 1 550 nm and more than 33 dB sidemode suppression ratio(SMSR) is obtained.The four channels can operate separately or simultaneously.更多还原