Integrated-optic chromatic dispersion compensator composed of arrayed-waveguide gratings and delay lines

Koichi Takiguchi

doi:10.1117/12.2647665

17 March 2023 Integrated-optic chromatic dispersion compensator composed of arrayed-waveguide gratings and delay lines

Koichi Takiguchi

Proceedings Volume 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023; 1242503 (2023) https://doi.org/10.1117/12.2647665
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We report on a waveguide-type chromatic dispersion compensator comprising a pair of arrayed-waveguide gratings and an array of 100 fixed delay lines. The compensator was fabricated with a silica waveguide with the relative index difference of 2.3%. We connected the first arrayed-waveguide grating output to the second arrayed-waveguide grating input through the delay lines. Each demultiplexed wavelength component at the first arrayed-waveguide grating experiences assigned delay for the dispersion compensation and is again multiplexed at the second arrayed-waveguide grating. The compensator can trim the dispersion of ten channels with spacing of 2.0 nm. The obtained dispersion compensation value and bandwidth at each channel were about -53 ps/nm and 1.6 nm, respectively. The compensator is helpful to the dispersion compensation for high-speed intensity-modulated signals including on-off keying and pulse amplitude modulation signals.

Conference Presentation

Citation Download Citation

Koichi Takiguchi "Integrated-optic chromatic dispersion compensator composed of arrayed-waveguide gratings and delay lines", Proc. SPIE 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023, 1242503 (17 March 2023); https://doi.org/10.1117/12.2647665

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