60-GHz Millimeter-wave Over Fiber with Directly Modulated Dual-mode Laser Diode.
A directly modulated dual-mode laser diode (DMLD) with third-order intermodulation distortion (IMD3) suppression is proposed for a 60-GHz millimeter-wave over fiber (MMWoF) architecture, enabling new fiber-wireless communication access to cover 4-km single-mode-fiber (SMF) and 3-m wireless 16-QAM OFDM transmissions. By dual-mode injection-locking, the throughput degradation of the DMLD is mitigated with saturation effect to reduce its threshold, IMD3 power and relative intensity noise to 7.7 mA, -85 dBm and -110.4 dBc/Hz, respectively, providing huge spurious-free dynamic range of 85.8 dB/Hz(2/3). This operation suppresses the noise floor of the DMLD carried QPSK-OFDM spectrum by 5 dB. The optical receiving power is optimized to restrict the power fading effect for improving the bit error rate to 1.9 × 10(-3 )and the receiving power penalty to 1.1 dB. Such DMLD based hybrid architecture for 60-GHz MMW fiber-wireless access can directly cover the current optical and wireless networks for next-generation indoor and short-reach mobile communications.
Graduate Institute of Photonics and Optoelectronics, National Taiwan University (NTU), No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan, Republic of China.
Cheng-Ting
CT
Tsai
Institute of Photonic System, National Chiao Tung University (NCTU), No. 301, Gaofa 3rd Rd., Guiren Dist., Tainan City 71150, Taiwan, Republic of China.
Chi-Hsiang
CH
Lin
Institute of Photonic System, National Chiao Tung University (NCTU), No. 301, Gaofa 3rd Rd., Guiren Dist., Tainan City 71150, Taiwan, Republic of China.
Chun-Ting
CT
Lin
Graduate Institute of Photonics and Optoelectronics, National Taiwan University (NTU), No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan, Republic of China.
Yu-Chieh
YC
Chi
Graduate Institute of Photonics and Optoelectronics, National Taiwan University (NTU), No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan, Republic of China.
Gong-Ru
GR
Lin