We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both ele...We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both electrical and optical output characteristics. The electrical and optical bistabilities controlled by the voltage through the tunneling diode are also measured. When the voltage changes between 1.46 V and 1.66 V, a 200-mV-wide hysteresis loop and an optical power ON/OFF ratio of 17 dB are obtained. A side-mode suppression ratio of the integrated device in the ON state is up to 43 dB. The tunneling diode can switch on/off the laser within a very small voltage range compared with that directly controlled by a voltage source.展开更多
采用多量子阱掩埋条形（BRS）增益芯片和拉锥光纤布拉格光栅（FBG）,制作了1.5μm波段FBG外腔式窄线宽半导体激光器。封装后器件实现了全电流范围内稳定单模窄线宽激光输出。30~250 m A驱动电流下线宽小于15.48 k Hz,实测最小线宽为6.42...采用多量子阱掩埋条形（BRS）增益芯片和拉锥光纤布拉格光栅（FBG）,制作了1.5μm波段FBG外腔式窄线宽半导体激光器。封装后器件实现了全电流范围内稳定单模窄线宽激光输出。30~250 m A驱动电流下线宽小于15.48 k Hz,实测最小线宽为6.42 k Hz,频率稳定度为7.2×10-8/s,边模抑制比大于40 d B,最大出纤功率大于10 m W。这种集成窄线宽激光器性能优异,且制作成本低,工艺简单,适于批量生产,可应用于400 Gb/s相干通信系统的发射源与接收机本振源。展开更多
An In P-based monolithically integrated few-mode transmitter aiming at the combination of wavelength division multiplexing（WDM） and mode division multiplexing（MDM） technologies is proposed. The core elements of th...An In P-based monolithically integrated few-mode transmitter aiming at the combination of wavelength division multiplexing（WDM） and mode division multiplexing（MDM） technologies is proposed. The core elements of the proposed transmitter are mode converters and a wavelength-mode division multiplexer that are all based on multimode interference（MMI） couplers. Simulations show that the wavelength-mode division multiplexer has a large fabrication tolerance of 30 and 0.5 μm for the length and the width of the device, respectively.A low loss below 0.26 dB for the passive parts of the transmitter is obtained in the whole C-band wavelength range.展开更多
The design, fabrication and characterization of a fundamental/first-order mode converter based on mul- timode interference coupler on InP substrate were reported. Detailed optimization of the device parameters were in...The design, fabrication and characterization of a fundamental/first-order mode converter based on mul- timode interference coupler on InP substrate were reported. Detailed optimization of the device parameters were investigated using 3D beam propagation method. In the experiments, the fabricated mode converter realized mode conversion from the fundamental mode to the first-order mode in the wavelength range of 1530-1565 nm with ex- cess loss less than 3 dB. Moreover, LPol and LP11 fiber modes were successfully excited from a few-mode fiber by using the device. This InP-based mode converter can be a possible candidate for integrated transceivers for future mode-division multiplexing system.展开更多
基金Supported by the National Key Research and Development Program of China under Grant No 2017YFB0405301the National Natural Science Foundation of China under Grant Nos 61604144 and 61504137
文摘We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both electrical and optical output characteristics. The electrical and optical bistabilities controlled by the voltage through the tunneling diode are also measured. When the voltage changes between 1.46 V and 1.66 V, a 200-mV-wide hysteresis loop and an optical power ON/OFF ratio of 17 dB are obtained. A side-mode suppression ratio of the integrated device in the ON state is up to 43 dB. The tunneling diode can switch on/off the laser within a very small voltage range compared with that directly controlled by a voltage source.
文摘采用多量子阱掩埋条形（BRS）增益芯片和拉锥光纤布拉格光栅（FBG）,制作了1.5μm波段FBG外腔式窄线宽半导体激光器。封装后器件实现了全电流范围内稳定单模窄线宽激光输出。30~250 m A驱动电流下线宽小于15.48 k Hz,实测最小线宽为6.42 k Hz,频率稳定度为7.2×10-8/s,边模抑制比大于40 d B,最大出纤功率大于10 m W。这种集成窄线宽激光器性能优异,且制作成本低,工艺简单,适于批量生产,可应用于400 Gb/s相干通信系统的发射源与接收机本振源。
基金supported by the National 973 Program of China(No.2014CB340102)the National Nature Science Foundation of China(Nos.61320106013 and61271066)
文摘An In P-based monolithically integrated few-mode transmitter aiming at the combination of wavelength division multiplexing（WDM） and mode division multiplexing（MDM） technologies is proposed. The core elements of the proposed transmitter are mode converters and a wavelength-mode division multiplexer that are all based on multimode interference（MMI） couplers. Simulations show that the wavelength-mode division multiplexer has a large fabrication tolerance of 30 and 0.5 μm for the length and the width of the device, respectively.A low loss below 0.26 dB for the passive parts of the transmitter is obtained in the whole C-band wavelength range.
基金Project supported by the National Basic Research Program of China(No.2014CB340102)the National Natural Science Foundation of China(Nos.61274045,61335009)
文摘The design, fabrication and characterization of a fundamental/first-order mode converter based on mul- timode interference coupler on InP substrate were reported. Detailed optimization of the device parameters were investigated using 3D beam propagation method. In the experiments, the fabricated mode converter realized mode conversion from the fundamental mode to the first-order mode in the wavelength range of 1530-1565 nm with ex- cess loss less than 3 dB. Moreover, LPol and LP11 fiber modes were successfully excited from a few-mode fiber by using the device. This InP-based mode converter can be a possible candidate for integrated transceivers for future mode-division multiplexing system.
