半導體雷射於全光再生之應用

Abstract

在本篇論文中我們探討了全光再生技術。而半導體雷射這種常見的經濟型光源，最近被發現其在被失真訊號注入鎖定之下能夠成為一個理想的光決策元件進而提供全光振幅及波形再生功能。本論文探討了其理論分析以及實驗論證。以傳統雙模注入鎖定技術為基礎，我們提出了兩種基於半導體雷射之振幅及波形全光再生方法。第一種方式是一種簡化的架構，係使用高集成之自我注入鎖定Fabry-Pérot雷射二極體來達成全光振幅及波形再生而不需要傳統架構所需的外部連續光源。此外，我們也提出了一個將自我注入鎖定Fabry-Pérot雷射二極體併入雙向光放大器的整合性模組。另一種方式為第一種方式的免放大器模式。藉由技巧性的使用與第一種方式的不同操作狀態，甚至可以不需要外部放大器即可達到1.3/1.5 μm全光振幅及波形再生。實驗結果證明了這兩種提出的方法皆為針對系統缺陷之經濟且有效率的解決方案，並對於未來光網路的發展有著廣闊的前景。

In this dissertation, we investigate the all-optical regeneration techniques. A semiconductor laser, a commonly available low-cost light source, is recently found to be an ideal optical decision element, which can provide all-optical 2R regenerating function when injection-locked by a degraded signal. Both theoretical analysis and experimental demonstration are studied. Based on the traditional two-mode injection locking (TMIL) technique, two types of semiconductor-laser-based 2R schemes are presented. The first scheme has a simplified structure which employs a compact self-seed Fabry-Pérot laser diode (SSFP-LD) to execute all-optical 2R regeneration without the help from the traditionally required external probe lasers. Additionally, an integrated module using this SSFP-LD incorporated in a bidirectional optical amplifier is also proposed. Another scheme is an amplifier-free edition of the first one. By skillfully using different operation conditions from those of the first scheme, even the outside amplifiers are not required for 1.3/1.5 μm all-optical 2R regeneration. The proposed schemes are proved to be cost-effective solutions for the system impairments, and are promising for future deployment of optical networks.