Multiple phase-shifted(MPS)diffraction grating is an effective way proposed to overcome the spatial hole burning(SHB)effect in a distributed feedback(DFB)laser.We present two symmetric λ/8 phase-shifted DFB lasers by...Multiple phase-shifted(MPS)diffraction grating is an effective way proposed to overcome the spatial hole burning(SHB)effect in a distributed feedback(DFB)laser.We present two symmetric λ/8 phase-shifted DFB lasers by using nanoimprint lithography(NIL).The threshold current of a typical laser is less than 15 mA.The side mode suppression ratio(SMSR)is still above 42 dB even at 100 mA current injection.To show the versatility of NIL,eight different wavelength MPS-DFB lasers on this single chip are also demonstrated.Our results prove that NIL is a promising tool for fabricating high performance complex grating DFB lasers.展开更多
An optical 90° hybrid based on an InP 4 × 4 multimode interference (MMI) coupler is designed and fabricated for the application in a coherent receiver.It reveals that the width of multimode waveguide is the ...An optical 90° hybrid based on an InP 4 × 4 multimode interference (MMI) coupler is designed and fabricated for the application in a coherent receiver.It reveals that the width of multimode waveguide is the most critical parameter for the devices,and the multimode waveguide width can be accurately controlled within 0.1 μm in our experiments.Across the entire C-band (1527-1561 nm),the maximum imbalance of the devices is less than 0.7dB,and the common mode rejection ratios for in-phase channels and quadrature channels are better than - 24 dB.展开更多
随着光通信技术的快速发展,光纤传输的容量呈几何式增长,对密集波分复用(DWDM)网络系统的管理和调度灵活性要求也在不断提高。波长可调模块可以满足网络管理灵活的要求,在波分复用(WDM)系统和5G网络中将会有广泛应用。而作为模块内的核...随着光通信技术的快速发展,光纤传输的容量呈几何式增长,对密集波分复用(DWDM)网络系统的管理和调度灵活性要求也在不断提高。波长可调模块可以满足网络管理灵活的要求,在波分复用(WDM)系统和5G网络中将会有广泛应用。而作为模块内的核心元件,可调激光器的研究就显得尤为重要。文章介绍了一种可调激光器和硅光调制器芯片混合集成封装技术,利用一种胶合标准具的设计进行波长控制,节省了半导体制冷器,减小了封装尺寸。其制作的可调激光器件能满足ITU-96通道的波长输出,且满足100 G BASE-LR4国际标准的工作眼图要求。展开更多
A monolithically integrated four-channel λ/4 phase shift distributed feedback （DFB） laser array with a 4 × 1 multimode interference combiner is designed and fabricated using nanoimprint lithography. The thresh...A monolithically integrated four-channel λ/4 phase shift distributed feedback （DFB） laser array with a 4 × 1 multimode interference combiner is designed and fabricated using nanoimprint lithography. The threshold currents of the lasers are less than 10mA, which are as good as a discrete DFB laser. Moreover, the side-mode suppression ratio is also better than 50 dB. The channel space is about 200 GHz for dense wavelength division multiplexing applications in an 1.55μm system.展开更多
基金the National Natural Science Foundation of China under Grant Nos 11044009,A040507,61076042 and 60607006the Special Project on Development of National Key Scientific Instruments and Equipment of China under Grant No 2011YQ16000205+2 种基金the National Key Technology R&D Program of China under Grant No 2009BAH49B01the National High-Technology Research and Development Program of China under Grant Nos 2011AA010304 and 2011AA03A106the Science and Technology Special Project in Hubei Province under Grant No 2009AAA009.
文摘Multiple phase-shifted(MPS)diffraction grating is an effective way proposed to overcome the spatial hole burning(SHB)effect in a distributed feedback(DFB)laser.We present two symmetric λ/8 phase-shifted DFB lasers by using nanoimprint lithography(NIL).The threshold current of a typical laser is less than 15 mA.The side mode suppression ratio(SMSR)is still above 42 dB even at 100 mA current injection.To show the versatility of NIL,eight different wavelength MPS-DFB lasers on this single chip are also demonstrated.Our results prove that NIL is a promising tool for fabricating high performance complex grating DFB lasers.
基金Supported by the National Natural Science Foundation of China under Grant No 61076042the Special Project on Development of National Key Scientific Instruments and Equipment of China under Grant No 2011YQ16000205+3 种基金the National Key Technology R&D Program of China under Grant No 2009BAH49B01the National High Technology Research and Development Program(863 Program)of China under Grant Nos 2011AA03A106 and 2011AA010304,Science and Technology Special Project in Hubei Province(No 2009AAA009)the Natural Science Foundation of Hubei Province(No 2010CDB01606)the Research Funds for the Central Universities(HUST No 2011QN036).
文摘An optical 90° hybrid based on an InP 4 × 4 multimode interference (MMI) coupler is designed and fabricated for the application in a coherent receiver.It reveals that the width of multimode waveguide is the most critical parameter for the devices,and the multimode waveguide width can be accurately controlled within 0.1 μm in our experiments.Across the entire C-band (1527-1561 nm),the maximum imbalance of the devices is less than 0.7dB,and the common mode rejection ratios for in-phase channels and quadrature channels are better than - 24 dB.
文摘随着光通信技术的快速发展,光纤传输的容量呈几何式增长,对密集波分复用(DWDM)网络系统的管理和调度灵活性要求也在不断提高。波长可调模块可以满足网络管理灵活的要求,在波分复用(WDM)系统和5G网络中将会有广泛应用。而作为模块内的核心元件,可调激光器的研究就显得尤为重要。文章介绍了一种可调激光器和硅光调制器芯片混合集成封装技术,利用一种胶合标准具的设计进行波长控制,节省了半导体制冷器,减小了封装尺寸。其制作的可调激光器件能满足ITU-96通道的波长输出,且满足100 G BASE-LR4国际标准的工作眼图要求。
文摘A monolithically integrated four-channel λ/4 phase shift distributed feedback （DFB） laser array with a 4 × 1 multimode interference combiner is designed and fabricated using nanoimprint lithography. The threshold currents of the lasers are less than 10mA, which are as good as a discrete DFB laser. Moreover, the side-mode suppression ratio is also better than 50 dB. The channel space is about 200 GHz for dense wavelength division multiplexing applications in an 1.55μm system.
