Resonant cavity works as tunable detector

A semiconductor detector that can be tuned over a range of 30 nm has been developed for potential applications in wavelength-division-multiplexing systems by scientists at Stanford University (Stanford, CA). According to one of the developers, Connie Chang-Hasnain, the tunable device is potentially an inexpensive detector that can especially impact the realization of practical, low-cost local-area networks and fiber-to-the-curb applications. Such a device also has the potential for gigahert¥