Frequency and Bandwidth Tunable Integrated Microwave Photonic Bandpass Filter

Porzi, Claudio; Reza, Manuel; Sorel, Marc; Bogoni, Antonella

doi:10.1109/foan56774.2022.9939702

Cited by 3 publications

(1 citation statement)

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“…Additional tunable control for the carrier and sideband relative amplitude is employed for fine optimization of the operation. The integrated MWP filter features can be tailored for targeting different bandwidth values by adjusting the parameters of the DFBR, that can be designed to provide a bandpass transfer function as narrow as 1 GHz [29], [53] or below, suitable for instance for channelizing operation in high-capacity next generation mobile networks. At the same time, the operating frequency range can be further extended by optimizing the silicon photonics PM bandwidth [54], [55].…”

Section: Discussionmentioning

confidence: 99%

Silicon-on-Insulator Microwave Photonic Filter With Widely Tunable and Reconfigurable Flat-Top Bandpass Functionality

Porzi

Reza

Ghelfi³

et al. 2022

J. Lightwave Technol.

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We report of a silicon photonics (SiP) flat-top bandpass microwave photonic (MWP) filter with large out-of-band power rejection (OBPR) of up to more than 40 dB and exhibiting central frequency tunability over a range as large as 70 GHz, while still guaranteeing a minimum full-span OBPR larger than 25 dB. Furthermore, the RF bandpass transfer function can be widely configured without sacrificing the filter performance. In the present realization, a continuous bandwidth tuning from 5 to 10 GHz (corresponding to a 100% of bandwidth variation) is demonstrated. The operation is based on optical-to-RF mapping the response of a tunable and bandwidth reconfigurable photonic integrated optical filter, realized with a high-order distributed feedback resonator (DFBR) waveguide Bragg grating structure. A high level of functional integration is provided in a compact footprint of less than 2 mm 2 by embedding within the circuit a SiP phase modulator generating the modulation sideband scanning the DFBR filter, and a tunable optical splitter optimizing the MWP filter performance. Possibility of further extending system integration for monolithic on-chip operation is also investigated.

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Section: Discussionmentioning

confidence: 99%