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Garrett M, Liu Y, Merklein M, Bui CT, Lai CK, Choi DY, Madden SJ, Casas-Bedoya A, Eggleton BJ. Integrated microwave photonic notch filter using a heterogeneously integrated Brillouin and active-silicon photonic circuit. Nat Commun 2023; 14:7544. [PMID: 37985657 PMCID: PMC10662262 DOI: 10.1038/s41467-023-43404-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023] Open
Abstract
Microwave photonics (MWP) has unlocked a new paradigm for Radio Frequency (RF) signal processing by harnessing the inherent broadband and tunable nature of photonic components. Despite numerous efforts made to implement integrated MWP filters, a key RF processing functionality, it remains a long-standing challenge to achieve a fully integrated photonic circuit that can merge the megahertz-level spectral resolution required for RF applications with key electro-optic components. Here, we overcome this challenge by introducing a compact 5 mm × 5 mm chip-scale MWP filter with active E-O components, demonstrating 37 MHz spectral resolution. We achieved this device by heterogeneously integrating chalcogenide waveguides, which provide Brillouin gain, in a complementary metal-oxide-semiconductor (CMOS) foundry-manufactured silicon photonic chip containing integrated modulators and photodetectors. This work paves the way towards a new generation of compact, high-resolution RF photonic filters with wideband frequency tunability demanded by future applications, such as air and spaceborne RF communication payloads.
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Affiliation(s)
- Matthew Garrett
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Yang Liu
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Moritz Merklein
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia.
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Cong Tinh Bui
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Choon Kong Lai
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Duk-Yong Choi
- Laser Physics Centre, Department of Quantum Science and Technology, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia
| | - Stephen J Madden
- Laser Physics Centre, Department of Quantum Science and Technology, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia
| | - Alvaro Casas-Bedoya
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Benjamin J Eggleton
- Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia.
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW, 2006, Australia.
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Wang Y, Liang D, Xie Y, Wu P. Flexible channel selection method based on optical combs for broadband signals receiving. OPTICS EXPRESS 2023; 31:19979-19989. [PMID: 37381402 DOI: 10.1364/oe.492774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/16/2023] [Indexed: 06/30/2023]
Abstract
A flexible channel selection method based on optical combs is proposed for reconfigurable optical channels in this paper. Optical-frequency combs with a large frequency interval are used to modulate broadband radio frequency (RF) signals, and an on-chip reconfigurable optical filter [Proc. of SPIE, 11763, 1176370 (2021).10.1117/12.2587403] is used to perform periodic carrier separation of wideband and narrowband signals and channel selection. In addition, flexible channel selection is achieved by presetting the parameters of a fast-response programmable wavelength-selective optical switch and filter device. Channel selection only relies on the combs through the Vernier effect of the combs and the passbands for different periods and does not require the use an additional switch matrix. Finally, flexible switching between and selection of specific channels for 13 GHz and 19 GHz broadband RF signals are experimentally verified.
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Daulay O, Liu G, Ye K, Botter R, Klaver Y, Tan Q, Yu H, Hoekman M, Klein E, Roeloffzen C, Liu Y, Marpaung D. Ultrahigh dynamic range and low noise figure programmable integrated microwave photonic filter. Nat Commun 2022; 13:7798. [PMID: 36528603 PMCID: PMC9759590 DOI: 10.1038/s41467-022-35485-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Microwave photonics has adopted a number of important concepts and technologies over the recent pasts, including photonic integration, versatile programmability, and techniques for enhancing key radio frequency performance metrics such as the noise figure and the dynamic range. However, to date, these aspects have not been achieved simultaneously in a single circuit. Here, we report a multi-functional photonic integrated circuit that enables programmable filtering functions with record-high performance. We demonstrate reconfigurable filter functions with record-low noise figure and a RF notch filter with ultra-high dynamic range. We achieve this unique feature using versatile complex spectrum tailoring enabled by an all integrated modulation transformer and a double injection ring resonator as a multi-function optical filtering component. Our work breaks the conventional and fragmented approach of integration, functionality and performance that currently prevents the adoption of integrated MWP systems in real applications.
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Affiliation(s)
- Okky Daulay
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands
| | - Gaojian Liu
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands
- China Academy of Space Technology (Xi'an), Xi'an, China
| | - Kaixuan Ye
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands
| | - Roel Botter
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands
| | - Yvan Klaver
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands
| | - Qinggui Tan
- China Academy of Space Technology (Xi'an), Xi'an, China
| | - Hongxi Yu
- China Academy of Space Technology (Xi'an), Xi'an, China
| | | | - Edwin Klein
- LioniX International BV, Enschede, Netherlands
| | | | - Yang Liu
- Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - David Marpaung
- Nonlinear Nanophotonics Group, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Netherlands.
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Gao D, Li T, Bai Z, Ma R, Xie Z, Jia S, Wang W, Xie X. Multi-modulation compatible miniaturization system for FSO communication assisted by chirp-managed laser. OPTICS EXPRESS 2022; 30:32306-32316. [PMID: 36242295 DOI: 10.1364/oe.465160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
In recent years, the thriving satellite laser communication industry has been severely hindered by the limitations of incompatible modulation formats and restricted Size Weight and Power (SWaP). A multi-modulation compatible method serving for free-space optical (FSO) communication has been proposed assisted by chirp-managed laser (CML). The corresponding demonstration system has been established for realizing free-switching between intensity (OOK) and phase modulation (RZ-DPSK). The feasibility and performance of system have been evaluated sufficiently when loading with 2.5 and 5 Gbps data streams, respectively. Additionally, a control-group system has been operated utilizing Mach-Zehnder modulator (MZM) for comparison between CML-based and MZM-based compatibility solutions. The OOK receiving sensitivities of CML-based system are -47.02 dBm@2.5 Gbps and -46.12 dBm@5 Gbps at BER of 1×10-3 which are 0.62 dB and 1.11 dB higher than that of MZM; the receiving sensitivities of RZ-DPSK are -50.12 dBm@2.5 Gbps and -47.03 dBm@5 Gbps which are 0.79 dB and 0.47 dB higher than that of MZM respectively. Meanwhile, CML-based transmitter abandoned the traditional modulator and its complicated supporting devices which can effectively contribute to the reduction of SWaP. The CML-based system has been proven to have the compatibility between intensity and phase modulation while also possesses a miniaturized design. It may provide fresh thinking to achieve a practical miniaturization system for satisfying the requirements of space optical network in future.
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Chiba A, Sunaga Y. Complex amplitude estimation of a monochromatic radio-frequency signal using frequency downconversion via direct detection of interfered optical phase-modulation signals. OPTICS LETTERS 2021; 46:2646-2649. [PMID: 34061078 DOI: 10.1364/ol.426425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
We propose an estimation scheme for a radio-frequency (RF) signal based on microwave and millimeter-wave photonics to avoid degradation of measurement accuracy due to RF devices used in signal detection. In this scheme, two-parallel optical phase modulation and low-pass optical direct detection of the interference signal are utilized, enabling the transfer of complex amplitudes of the RF signal into the interfered lightwave. A 10 GHz RF signal is successfully evaluated from the 20 kHz oscillation signal obtained from the direct detection. This scheme can be applied to signals in the millimeter-wave region because it does not require wide bandwidth detection and optical-domain filtering by using a special optical filter.
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