Core Viewpoint - The article discusses the author's experiences and insights related to investing in optical and laser companies, specifically mentioning Lumentum Holdings and Ciena, while emphasizing a personal background in engineering and a focus on technology stocks [1]. Group 1 - The author has written about several optical and laser companies, including Lumentum Holdings and Ciena, indicating a sustained interest in this sector [1]. - The author has a background as a Merchant Seaman and has developed a strong interest in investing over the last 15 years, learning from various sources [1]. - The author expresses a preference for technology stocks due to an engineering background, suggesting a technical perspective on investment choices [1].