Author Affiliations

Z. Liu,⁽¹⁾ Z. Li,⁽¹⁾ Y. Chen,⁽¹⁾ B. Kelly,⁽²⁾ R. Phelan,⁽²⁾ J. O’Carroll,⁽²⁾ J. P. Wooler,⁽¹⁾ N. V. Wheeler,⁽¹⁾ A. M. Heidt,⁽¹⁾ T. Richter,⁽³⁾ C. Schubert,⁽³⁾ M. Becker,⁽⁴⁾ F. Poletti,⁽¹⁾ M. N. Petrovich,⁽¹⁾ S. Alam,⁽¹⁾ D. J. Richardson,⁽¹⁾ and R. Slavík⁽¹⁾

⁽¹⁾Optoelectronics Research Centre, University of Southampton, Southampton, U.K.

⁽²⁾Eblana Photonics, Dublin, Ireland

⁽³⁾Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, Einsteinufer 37, 10587 Berlin, Germany.

⁽⁴⁾IPHT, Jena, Germany