Interesting article in the magazine of a dutch magazine "Integrating photonics gaining momentum".
"The market for integrated photonics will grow from fifty billion in 2020 to thousands of billions in the longer term".
Link: https://www.cursor.tue.nl/fileadmin/user_upload/Magazines/PDF_jes_Nederlands/58/Cursor_12_spread_2.pdf
Please read page 17 for English, for the Dutch people please read pages 15, 16 and 17.