Shaofeng Qiu
Huawei
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Publication
Featured researches published by Shaofeng Qiu.
IEEE Photonics Technology Letters | 2010
Zhu Liang Yu; Gordon Ning Liu; Shaofeng Qiu; Yijia Wei; Shuqiang Shen; Qianjin Xiong
We propose a regularized sparse recovery (RSR) technique to monitor optical power from the broadened optical spectrum acquired by scanning a tunable optical filter (TOF). The key idea of RSR is to find a smooth but sparse signal spectrum that matches the observed data of a broadened spectrum model within a tolerable error. Experiments demonstrated that RSR can be used to monitor accurately the power of mixed 10-G/40-G wavelength-division-multiplexing channels with 50-GHz channel spacing using commercial TOFs. This technique also has higher immunity to measurement and TOF response errors than the regularized least square method. It does not require strong repeatability of TOF response and makes the low-cost TOF suitable for optical power monitoring.
optical fiber communication conference | 2013
Bo Wu; Shaofeng Qiu; Zhiyong Feng; Shiyi Cao; Han Zhao; Junling Xiang; Chiwu Ding; Gordon Ning Liu; Ning Deng; Qianjin Xiong
A proof-of-concept prototype of optical sub-wavelength switching fabric is demonstrated. The prototype supports petabit switching capacity with agile service granularity and low power consumption.
optical fiber communication conference | 2012
Shiyi Cao; Shaofeng Qiu; Lun Wei; Han Zhao; Chiwu Ding; Junling Xiang; QiWen Zhong; Min Ye; HuiYu Zhou; Kent Jordan; Wade Saulsberry; Zhiyong Feng; Qianjin Xiong
A multi-granularity optical burst switch fabric with 80M×80M(M=2, 4, 8...) ports using Fast Tunable Lasers and ULCF-AWG is proposed. This fabric for Petabits/s multi-chassis switches and routers is also experimentally demonstrated.
Proceedings of SPIE | 2016
Bo Wu; Xian Zhou; Yanan Ma; Jun Luo; Kangping Zhong; Shaofeng Qiu; Zhiyong Feng; Yazhi Luo; Mikel Agustin; Nikolay N. Ledentsov; Joerg Kropp; V. A. Shchukin; N.N. Ledentsov; Iain Eddie; Lu Chao
Discrete Multitone Transmission (DMT) transmission over standard multimode fiber (MMF) using high-speed single (SM) and multimode (MM) Vertical-Cavity Surface-Emitting Lasers (VCSELs) is studied. Transmission speed in the range of 72Gbps to 82Gbps over 300m -100m distances of OM4 fiber is realized, respectively, at Bit-Error-Ratio (BER) <5e-3 and the received optical power of only -5dBm. Such BER condition requires only 7% overhead for the conversion to error-free operation using single Bose-Chaudhuri-Hocquenghem forward error correction (BCH-FEC) coding and decoding. SM VCSEL is demonstrated to provide a much higher data transmission capacity over MMF. For 100m MMF transmission SM VCSEL allows 82Gbps as compared to MM VCSEL resulting in only 34Gbps at the same power (-5dBm). Furthermore, MM VCSEL link at 0dBm is still restricted at 100m distance by 63Gbps while SM VCSEL can exceed 100Gbps at such power levels. We believe that with further improvement in SM VCSELs and fiber coupling >100Gbps data transmission over >300m MMF distances at the BER levels matching the industry standards will become possible.
asia communications and photonics conference and exhibition | 2009
Zhiyong Feng; Shaofeng Qiu; Yijia Wei; Liangchuan Li; Gordon Ning Liu; Qianjin Xiong
We have demonstrated a coherent OTDR based on log-detector. The effect of laser linewidth and electrical filter bandwidth on coherent OTDR performance is theoretically analyzed and experimentally investigated.
Archive | 2011
Zhiyong Feng; Shaofeng Qiu; Yijia Wei
optical fiber communication conference | 2012
Shaofeng Qiu; Shiyi Cao; Lun Wei; Han Zhao; Chiwu Ding; Junling Xiang; QiWen Zhong; Min Ye; HuiYu Zhou; Ning Deng; Kent Jordan; Wade Saulsberry; Zhiyong Feng; Qianjin Xiong
Archive | 2011
Zhiyong Feng; Shaofeng Qiu; Yijia Wei
Archive | 2015
吴波; Bo Wu; 邱少锋; Shaofeng Qiu; 马雅男; Yanan Ma; 邓宁; Ning Deng
international conference on optical communications and networks | 2011
Gordon Ning Liu; Shiyi Cao; Q. Xue; Yijia Wei; Shaofeng Qiu; Zhiyong Feng; Qianjin Xiong; Zhu Liang Yu