September 2017 Issue
Feature Articles
The Internet of Things: From Hype to Reality
The web of connected objects has so far failed to live up to its billing. But that should change.
by Edwin CartlidgeMercury-198 and the Standard Meter
From the late 19th century onward, numerous candidates were put forward as definitions of a “standard meter,” until the meter itself was dropped as a primary standard in 1983. One of those candidates was the green line of mercury-198—and therein lies an interesting optical tale.
by Joseph ReaderDepartments and Columns
Experts, Advisors and Advocates
Two OSA Congressional Fellows reflect on experiences during a time of political change.
Fiber Sensing Carves Out an IoT Space
Optical sensing within the Internet of Things will further smart manufacturing, smart labs and smart roadways.
Also in this Issue
OSA has become a genuinely global society, with more members outside of the United States than inside.
More on infrared LIBS; before Starshot, there was Sailbeam.
Honors and awards to Gao, Carney, Rajan, Keller; student members win best-demo award; Laser World of Photonics; thank you, editors and meeting volunteers.
Message from the Treasurer, 2016 highlights, and summary consolidated financial statements.

![Manual probe system with needles for test of semiconductor on silicon wafer. [A. Morozov / Getty]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1125/departments/202511-cover-web.jpg?ext=.jpg)
![Researcher Clara Saraceno in the lab. [Image by Carsten Behler Photography]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1025/departments/202510-cover-web.jpg?ext=.jpg)