@inproceedings{PCP-1,
  author = {Murphy, T. E. and Little, B. E. and Smith, H. I.},
  title = {Wavelength‐ and Polarization‐Insensitive Integrated Directional Couplers Using Mach‐Zehnder Structures},
  booktitle = {Integrated Photonics Research (IPR)},
  pages = {RTuA5},
  year = {1999}
}