Integrated-optic tunable filter for add/drop multiplexing of variable-capacity optical OFDM signal

Koichi Takiguchi; Yamato Furukawa

doi:10.1117/12.3000577

12 March 2024 Integrated-optic tunable filter for add/drop multiplexing of variable-capacity optical OFDM signal

Koichi Takiguchi, Yamato Furukawa

Proceedings Volume 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII; 128890S (2024) https://doi.org/10.1117/12.3000577
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

We report on an integrated-optic 10 x 10 filter available for an add/drop multiplexer of a variable-capacity optical orthogonal frequency division multiplexing (OFDM) signal. The filter was composed of ten switches and ten delay lines sandwiched by two slab star couplers and was fabricated by use of a silica waveguide. The filter functions as both optical discrete Fourier transform and inverse discrete Fourier transform circuits for demultiplexing and multiplexing the optical OFDM signal, respectively. We show measured one input by multi-output and multi-input by one output transmittance regarding the filter. We achieved the filter that could process the optical OFDM signal ranging from 10 to 50 Gbaud per channel. The filter is helpful to the prospective adaptive optical network where the guard bands are decreased, and the channel number, symbol rate per channel and modulation formats are flexibly changed corresponding to the traffic and transmission distance.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Koichi Takiguchi and Yamato Furukawa "Integrated-optic tunable filter for add/drop multiplexing of variable-capacity optical OFDM signal", Proc. SPIE 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII, 128890S (12 March 2024); https://doi.org/10.1117/12.3000577

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