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| 1 | Study on the protection of Er-doped phosphate glass waveguide surface in ion-exchange processing显示文摘A novel method, sputtering K9 glass film, is proposed to solve the surface corrosion of Er-doped phosphate glass during ion-exchange processing for optical waveguide fabrication. The corrosion causes are analyzed to be the intrinsically weak stabilization of phosphate glass structure, hydrophile and weakly acidic property of phosphate radical. Experimental results show that the K9 glass film could not only protect the Er-doped phosphate glass surface from being corroded but also give no influence on the waveguide fabrication. The effect of thickness of K9 glass film on the optical property of waveguide is also investigated and the op- timal thickness is found to be 60―80 nm. It provides a good base for further fabri- cation of active phosphate glass optical waveguide devices. | HAN XiuYou CHU FengHong CAI HaiWen FANG ZuJie ZHAO MingShan | 2008 | Science China(Technological Sciences)2008，51，7： | 2 |
| 2 | Integrated photonic RF self-interference cancellation on a silicon platform for full-duplex communication显示文摘In-band full-duplex(IBFD) technology can double the spectrum utilization efficiency for wireless communications,and increase the data transmission rate of B5G and 6G networks and satellite communications. RF self-interference is the major challenge for the application of IBFD technology, which must be resolved. Compared with the conventional electronic method, the photonic self-interference cancellation(PSIC) technique has the advantages of wide bandwidth, high amplitude and time delay tuning precision, and immunity to electromagnetic interference.Integrating the PSIC system on chip can effectively reduce the size, weight, and power consumption and meet the application requirement, especially for mobile terminals and small satellite payloads. In this paper, the silicon integrated PSIC chip is presented first and demonstrated for IBFD communication. The integrated PSIC chip comprises function units including phase modulation, time delay and amplitude tuning, sideband filtering, and photodetection, which complete the matching conditions for RF self-interference cancellation. Over the wide frequency range of C, X, Ku, and K bands, from 5 GHz to 25 GHz, a cancellation depth of more than 20 dB is achieved with the narrowest bandwidth of 140 MHz. A maximum bandwidth of 630 MHz is obtained at a center frequency of10 GHz. The full-duplex communication experiment at Ku-band by using the PSIC chip is carried out. Cancellation depths of 24.9 dB and 26.6 dB are measured for a bandwidth of 100 MHz at central frequencies of 12.4 GHz and14.2 GHz, respectively, and the signal of interest(SOI) with 16-quadrature amplitude modulation is recovered successfully. The factors affecting the cancellation depth and maximum interference to the SOI ratio are investigated in detail. The performances of the integrated PSIC system including link gain, noise figure, receiving sensitivity, and spurious free dynamic range are characterized. | XIUYOU HAN XINXIN SU MENG CHAO XINDI YANG WEIHENG WANG SHUANGLING FU YICHENG DU ZHENLIN WU MINGSHAN ZHAO | 2023 | Photonics Research2023，11，10： | 1 |
| 3 | Study on the characteristics of erbium-doped waveguide ring laser显示文摘A theoretical model of the erbium-doped waveguide ring laser is established according to the theory of erbium-doped waveguide amplifier and the transmission matrix of waveguide directional coupler. The influence of bend radius, coupling coefficient and doped erbium ion concentration on the characteristics of waveguide ring laser is investigated. It is shown that due to the co-action of waveguide bend loss and other relevant loss there is an optimal bend radius which can provide simultaneously low threshold pumping power and high laser light output power. As one part of the resonator's loss, the laser light coupling coefficient of directional coupler has an impact on the laser property. The analysis indicates that the laser achieves the high output power when the coupling coefficient is about 0.2. The threshold pumping power is the minimum when the doped erbium ion concentration is 0.85×1026 m-3. Increasing the concentration of doped erbium ions will enhance the output power of laser light as long as the concentration doesn't introduce remarkable up-conversion effect. The results give a good theoretical basis for the design and fabrication of erbium-doped waveguide ring laser devices. | XiuYou Han JiaNing Zhang MingShan Zhao ZuJie Fang | 2009 | Science China(Technological Sciences)2009，52，7： | 1 |
| 4 | Phase noise floor suppression of the output carrier from double sideband-carrier suppressed modulation system显示文摘A theoretical model of all the influencing factors on the phase noise floor of the output carrier from the double sideband-carrier suppressed (DSB-CS) modulation system is presented. Based on the established DSB-CS modulation system with different cases, the phase noise of the input carrier and the output doubled frequency carrier is measured and calculated using the theoretical model, respectively. The calculation results basically agree with the measurement results. It is shown that the phase noise floor of the output carrier is primarily influenced by the signal-spontaneous beat noise and the relative intensity noise (RIN) of the laser. So the phase noise floor of the output carrier can be minimized by choosing the laser with low RIN and the EDFA with low noise factor. | LUO Xin HAN XiuYou GU YiYing LI ShanFeng & ZHAO MingShan | 2011 | Science China(Information Sciences)2011，54，6： | 1 |
| 5 | Analysis of a second-order polarization-independent filter made of a single ring resonator and a Sagnac interferometer显示文摘 | Pang Fufei Liu Feng Han Xiuyou | 2006 | Optics Communications2006，260，2： | 1 |
| 6 | Optimal Design of 850nm 2 × 2 Multimode Interference Polymer Waveguide Coupler by Imprint Technique显示文摘2 | Yuchen SHAO Xiuyou HAN Xiaonan HAN Zhili LU Zhenlin WU Jie TENG Jinyan WANG Geert MORTHIER Mingshan ZHAO | 2016 | Photonic Sensors2016，6，3： | 0 |
| 7 | Polymer Integrated Waveguide Optical Biosensor by Using Spectral Splitting Effect显示文摘 | Xiaonan HAN Xiuyou HAN Yuchen SHAO Zhenlin WU Yuxin LIANG Jie TENG Shuhui BO Geert MORTHIER Mingshan ZHAO | 2017 | Photonic Sensors2017，7，2： | 0 |
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