LD-PD INC Established in 2004, we have become one of the leading sources in providing low cost Photo detector, laser diode and some related driving products. Our well educated research and development team is committed in search of answers to most frequently asked questions in today's complex technology. Our well trained engineering team, employs top of the line state-of-the-art technology in innovative fiber optics products. At the core of LD-PD’s capabilities is its expertise in designing and manufacturing high power, high reliability laser diodes. What’s more, LD-PD has been a manufacturer of Si detector and high speed Germanium transistors and diodes since 2008 and a manufacturer of infrared photodetectors since 2010.