10 Gb/s 16-quadrature amplitude modulation signal delivery over a wireless fiber system by using a directly modulated laser for electrical/optical conversion

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2015,（6）
• 页码范围: 1-4
• 页数: 4页
• 语种: 中文
• DOI: 10.3788/COL201513.060601

摘要

We propose and experimentally demonstrate a novel scheme to realize electrical/optical (E/O) conversion on the receiver side of a wireless fiber integration system at the W band.At the receiver,a directly modulated laser (DML) is used to realize E/O conversion.The received 85 GHz wireless millimeter-wave (mm-wave) signal is first down-converted into a 10 GHz electrical intermediate-frequency (IF) signal to overcome the insufficient bandwidth of the subsequent DML.Then,two cascaded electrical amplifiers (EAs) are employed to boost the electrical IF signal before it is used to drive a DML.By using this scheme,we transmit a 10 Gb/s 16 quadrature amplitude modulation (16QAM) signal over a 10 m wireless link,and then deliver it over a 2 km single-mode fiber-28 (SMF-28) wire link with a bit error ratio (BER) that is less than the hard-decision forward error correction threshold of 3.8 × 10-3.Our experimental results show that the DML is good device to be used for the E/O conversion of a 16QAM signal.