Photonics for a Better World

Nearly all communication depends on optics and optical technology. Thanks to optical fibers, which are thin flexible fiber made of silica or plastic, we can transmit texts, media, and the internet through light signals over long distances. The internet allows people around the world to feel connected in a way that has never before been possible. Whether originating from mobile phones or modems, almost 100 percent of all telecommunications land on an optical fiber network. In the photo above, Ebrahim Elmoly illustrates how humans rely on telecommunications to capture historic moments like the Egyptian Revolution of 2011. During the Arab Spring riots and demonstrations in Cairo and Alexandria lead to the overthrow of Egyptian President Hosni Mubarak and dissolution of the parliament. The word  “لحرية” on flag means "freedoms" in Arabic. Elmoly is is one of 32 contestants for the People’s Choice Award competition in the SPIE International Year of Light Photo Contest. J...

What better opportunity than Earth Day to point out another way that photonics plays a role in improving the planet? Awareness of the importance of taking care of the earth is becoming more widespread, and most importantly, not just in the affluent countries of the world. In fact, the developing nations are where some of the most innovative efforts are taking place. We've highlighted micro-solar projects in Africa and elsewhere, and the previous post about the LEDs being used to protect livestock from lions shows another brilliant but simple use of photonics. Here's one that combines solar energy and an expanding communications infrastructure in India. AirJaldi Networks, a company that provides solar-powered Wi-Fi for the rural masses, was plagued by the difficulty of maintaining power to its mobile phone towers in remote areas, especially during the monsoon season. Battery backups were expensive and frequently necessary. As GreenTech Solar reports : Here’s how it works: ...