Interleaved Silicon Nitride AWG Spectrometers

B. Imran Akca, Christopher R. Doerr

Research output: Contribution to JournalArticleAcademicpeer-review


Interleaved arrayed waveguide gratings (AWGs) have a great potential in providing large channel counts and narrower channel spacings for many applications, including optical communication, spectroscopy, and imaging. Here, a 75-channel silicon nitride based interleaved AWG was experimentally demonstrated. The design is comprised of a 3-channel primary AWG with 1 nm of resolution and three 25-channel secondary AWGs each with 3 nm of resolution. The final device has a spectral resolution of 1 nm over 75 nm bandwidth centered at 1550 nm. Its performance is compared with a conventional AWG spectrometer with 75 nm of bandwidth and 1 nm of resolution. The interleaved AWG demultiplexer showed lower crosstalk and better uniformity in addition to being two times smaller than the conventional design.
Original languageEnglish
Article number8554299
Pages (from-to)90-93
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number1
Early online date30 Nov 2018
Publication statusPublished - 1 Jan 2019


Manuscript received October 2, 2018; revised November 22, 2018; accepted November 27, 2018. Date of publication November 30, 2018; date of current version December 24, 2018. This work was supported in part by the Technology Foundation STW through the Innovational Research Incentives Scheme Veni under Grant SH302031 and in part by the Marie Curie Individual Fellowship under Grant FOIPO 704364. (Corresponding author: B. Imran Akca.) B. I. Akca is with the LaserLaB, Department of Physics and Astronomy, VU University Amsterdam, 1081 HV Amsterdam, The Netherlands (e-mail: [email protected]). C. R. Doerr is with Acacia Communications, Hazlet, NJ 07730 USA.

FundersFunder number
Innovational Research Incentives Scheme VeniSH302031
Horizon 2020 Framework Programme704364
Marie CurieFOIPO 704364
Stichting voor de Technische Wetenschappen


    • C-band
    • Integrated optics
    • arrayed waveguide grating
    • demultiplexer
    • interleaver
    • silicon nitride


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