论文部分内容阅读
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 16 QAM signal.
We propose and experimentally demonstrated 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 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 16 QAM signal.