@misc{indiciaed31af2deed90,
  title = {Wavelength-division multiplexed optical integrated circuit with vertical diffraction grating},
  author = {Lang, Robert J. and Forouhar, Siamak},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950007767},
  note = {Source identifier: 19950007767}
}