Graphene has many interesting properties for photonics, and applications have recently been demonstrated in lasers, detectors, and optical-gain materials. Articles about graphene remain among the most-read on www.laserfocusworld.com.
For a great introduction to the topic:
PHOTONIC FRONTIERS: Graphene photonics are making their way to practical use
A graphene laser could be used to amplify terahertz radiation:
Max Planck team demonstrates that graphene can lase
Graphene could bridge a key gap in the development of silicon photonics for the fiber transmission band:
Integrating graphene detectors with silicon photonics
International cooperation on research into graphene:
Ten-year European Graphene Flagship initiative launched in October 2013
And one of many recent developments:
More graphene! This time in a broadband photosensor