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基于双栅长GaN集成工艺的Ku波段收发芯片 被引量:1
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作者 孔令峥 彭龙新 +4 位作者 陶洪琪 张亦斌 闫俊达 王维波 韩方彬 《固体电子学研究与进展》 CAS 北大核心 2022年第6期429-434,472,共7页
研制了一款Ku波段GaN收发多功能芯片。芯片集成了接收通道的低噪声放大器和发射通道的功率放大器,使用单刀双掷开关实现通道间切换。该芯片采用两种不同栅长集成的GaN HEMT工艺。低噪声放大器使用0.10μm低压低噪声工艺,功率放大器和开... 研制了一款Ku波段GaN收发多功能芯片。芯片集成了接收通道的低噪声放大器和发射通道的功率放大器,使用单刀双掷开关实现通道间切换。该芯片采用两种不同栅长集成的GaN HEMT工艺。低噪声放大器使用0.10μm低压低噪声工艺,功率放大器和开关使用0.15μm高压高功率工艺。低噪声放大器采用电流复用结构以降低功耗,功率放大器采用三级电抗式匹配网络以提高芯片输出功率。测试结果表明,在14~18 GHz频带内,发射通道线性增益≥30 dB,饱和输出功率≥40.5 dBm,功率附加效率典型值为23%;接收通道线性增益为24 dB(±0.2 dB),噪声系数典型值为2.3 dB,功耗仅为140 mW(5 V/28 mA)。芯片面积为4.0 mm×3.0 mm。 展开更多
关键词 多功能芯片 氮化镓 双栅长 单片微波集成电路 收发 KU波段
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Polarization-Insensitive Silica on Silicon Arrayed Waveguide Grating Design 被引量:1
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作者 安俊明 李健 +4 位作者 郜定山 夏君磊 李建光 王红杰 胡雄伟 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2004年第11期1360-1363,共4页
A new technology for fabrication of silica on silicon arrayed waveguide grating (AWG) based on deep etching and thermal oxidation is presented.Using this method,a silicon layer is remained at the side of waveguide.The... A new technology for fabrication of silica on silicon arrayed waveguide grating (AWG) based on deep etching and thermal oxidation is presented.Using this method,a silicon layer is remained at the side of waveguide.The stress distribution and effective refractive index of waveguide fabricated by this approach are calculated using finite element and finite difference beam propagation method,respectively.The results of these studies indicate that the stress of silica on silicon optical waveguide can be matched in parallel and vertical direction and AWG polarization dependent wavelength (PDλ) can be reduced effectively due to side-silicon layer. 展开更多
关键词 silica on silicon arrayed waveguide grating stress BIREFRINGENCE polarization dependent wavelength numerical analysis
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A temperature sensor based on switchable dual- wavelength fiber Bragg grating laser with a semiconductor saturable absorber mirror 被引量:5
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作者 黎琦 黄凯强 陈海燕 《Optoelectronics Letters》 EI 2015年第6期466-468,共3页
A temperature sensor based on a switchable dual-wavelength fiber Bragg grating (FBG) laser with a semiconductor saturable absorber mirror (SESAM) is presented and demonstrated experimentally. The repetition rate o... A temperature sensor based on a switchable dual-wavelength fiber Bragg grating (FBG) laser with a semiconductor saturable absorber mirror (SESAM) is presented and demonstrated experimentally. The repetition rate of Q-switched pulses is -17 kHz. The results demonstrate that the measured temperature has good linearity to the wavelength spacing of the two lasing wavelengths and has a temperature sensitivity of 21 pm/℃ covering a range of-10--22 ℃. The ex- perimental results prove the feasibility of the proposed temperature sensor. 展开更多
关键词 半导体可饱和吸收镜 温度传感器 激光光 布拉格光纤 切换 光纤布拉格光 SESAM
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Dual-wavelength erbium-doped fiber laser with asymmetric fiber Bragg grating Fabry-Perot cavity
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作者 陈聪 徐志伟 +1 位作者 王蒙 陈海燕 《Optoelectronics Letters》 EI 2014年第6期427-429,共3页
A novel dual-wavelength fiber laser with asymmetric fiber Bragg grating(FBG) Fabry-Perot(FP) cavity is proposed and experimentally demonstrated. A couple of uniform FBGs are used as the cavity mirrors, and the third F... A novel dual-wavelength fiber laser with asymmetric fiber Bragg grating(FBG) Fabry-Perot(FP) cavity is proposed and experimentally demonstrated. A couple of uniform FBGs are used as the cavity mirrors, and the third FBG is used as intracavity wavelength selector by changing its operation temperature. Experimental results show that by adjusting the operation temperature of the intracavity wavelength selector, a tunable dual-wavelength laser emission can be achieved. The results demonstrate the new concept of dual-wavelength lasing with asymmetric FBG FP resonator and its technical feasibility. 展开更多
关键词 Bragg grating asymmetric lasing resonator Fabry tunable mirrors cascaded adjusting
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A tunable dual-wavelength fiber Bragg grating laser using an external-injected DFB laser 被引量:1
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作者 黄凯强 王勇 +2 位作者 黎琦 黄春雄 陈海燕 《Optoelectronics Letters》 EI 2015年第3期184-186,共3页
A tunable dual-wavelength fiber Bragg grating(FBG)laser based on a distributed feedback(DFB)laser injection is proposed and experimentally demonstrated.The wavelength spacing can be tuned by adjusting the operation te... A tunable dual-wavelength fiber Bragg grating(FBG)laser based on a distributed feedback(DFB)laser injection is proposed and experimentally demonstrated.The wavelength spacing can be tuned by adjusting the operation temperature of the DFB laser.When the DFB works at 25℃,a dual-wavelength simultaneous oscillation at 1 549.67 nm and1 553.44 nm with wavelength spacing of 3.77 nm is achieved.Our experimental results demonstrate the new concept of dual-wavelength lasing with a DFB laser injection and the technical feasibility. 展开更多
关键词 Bragg gratings Distributed feedback lasers
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Switchable dual-wavelength erbium-doped fiber laser with tunable wavelength 被引量:1
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作者 童峥嵘 刘梦颖 +2 位作者 曹晔 张卫华 郝霞 《Optoelectronics Letters》 EI 2015年第5期325-328,共4页
A switchable dual-wavelength erbium-doped fiber laser(EDFL) with tunable wavelength is demonstrated. The ring cavity consists of two branches with a fiber Bragg grating(FBG) and a spherical-shape structure as fiber fi... A switchable dual-wavelength erbium-doped fiber laser(EDFL) with tunable wavelength is demonstrated. The ring cavity consists of two branches with a fiber Bragg grating(FBG) and a spherical-shape structure as fiber filters, respectively. By adjusting the variable optical attenuator(VOA), the laser can be switched between the single-wavelength mode and the dual-wavelength mode. The spherical-shape structure has good sensitivity to the temperature. When the temperature changes from 30 °C to 190 °C, the central wavelength of the EDFL generated by the branch of spherical-shape structure varies from 1 551.6 nm to 1 561.8 nm, which means that the wavelength interval is tunable. 展开更多
关键词 tunable spherical branches Bragg grating switched lasing adjusting cascaded coupler
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