A synthesizer-free 28-GHz millimeter wave (MMW) carrier is generated by using orthogonally polarized dual-wavelength vertical-cavity surface-emitting laser (VCSEL) as the frontend transmitter. After equalizing the dual modes with an extremely weak power as low as −26 dBm (2.5 μW) at TM-mode polarization, the dual-wavelength power extinction of only 5.4 dB is achieved for optimizing the remote-node optical heterodyne of 28-GHz MMW carrier with a peak power of −59.8 dBm before antenna propagation with remaining similar relative intensity noise (RIN) as compared to the free-running case. Moreover, the mode partition noise (MPN) is increased less than 2 dBc/Hz by TM-mode injection at −26 dBm, whereas the TE-mode control results in unchanged noise spectrum as same as that obtained in free-running case even if the master power is increased to −18 dBm.

中文翻译：

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正交偏振双模 VCSEL 中相对强度和模式分配噪声的抑制

使用正交偏振双波长垂直腔面发射激光器 (VCSEL) 作为前端发射器，生成无合成器的 28GHz 毫米波 (MMW) 载波。在TM模式偏振下用低至-26 dBm（2.5 μW）的极弱功率均衡双模后，实现仅5.4 dB的双波长功率消光，用于优化28-GHz的远程节点光外差与自由运行情况相比，MMW 载波在天线传播前具有 -59.8 dBm 的峰值功率，并具有相似的相对强度噪声 (RIN)。此外，通过-26 dBm 的 TM 模式注入，模式分割噪声 (MPN) 增加不到 2 dBc/Hz，而 TE 模式控制导致与自由运行情况下获得的噪声频谱相同，即使主功率增加到−18 dBm。