横向耦合腔VCSEL：使100 GHz带宽可扩展
Transverse Coupled Cavity VCSEL: Making 100 GHz Bandwidth Achievable
摘要：
提高半导体激光器的调制带宽一直是研究和技术的挑战，以满足高速光子应用的需要。在本文中，我们提出了设计的垂直腔面发射激光器集成与多个横向耦合腔（MTCC）作为一个有前途的器件，具有超高的3 dB带宽。激光器具有高的调制性能，因为从周围的横向TCC到VCSEL腔的慢光反馈的累积的强耦合。光子-光子共振（PPR）预计将发生在超高频超过145 GHz，由于短TCC的光反馈，这实现了3 dB MBW达到170 GHz。该研究是基于从周围的TCC的多个横向慢光反馈下的VCSEL动力学的建模。我们表明，集成的VCSEL与四个或六个反馈腔是有利的，在实现更高的MBW增强下的慢光耦合到VCSEL腔的TCC-VCSEL。我们还表征了有前途的MTCC-VCSEL的相对强度噪声（RIN）的傅立叶频谱的超高带宽的制度的噪声特性。
英文摘要：
Enhancing the modulation bandwidth (MBW) of semiconductor lasers has been the challenge of research and technology to meet the need of high-speed photonic applications. In this paper, we propose the design of vertical-cavity surface-emitting laser integrated with multiple transverse coupled cavities (MTCCs) as a promising device with ultra-high 3-dB bandwidth. The laser features high modulation performance because of the accumulated strong coupling of the slow-light feedback from the surrounding lateral TCCs into the VCSEL cavity. Photon-photon resonance (PPR) is predicted to occur at ultra-high frequencies exceeding 145 GHz due to the optical feedback from short TCCs, which achieves 3-dB MBW reaching 170 GHz. The study is based on the modeling of the VCSEL dynamics under multiple transverse slow-light feedback from the surrounding TCCs. We show that the integration of the VCSEL with four or six feedback cavities is advantageous over the TCC-VCSEL in achieving much higher MBW enhancement under weaker coupling of slow-light into the VCSEL cavity. We also characterize the noise properties of the promising MTCC-VCSEL in the regime of ultra-high bandwidth in terms of the Fourier spectrum of the relative intensity noise (RIN).
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