Ultra-low-loss broadband multiport optical splitters
Апстракт
Conventional designs of multiport splitters rely on concatenation of directional couplers or multimode interference [1, 2]. However, the splitters show a considerable insertion loss and fast bandwidth drop with the number of ports. Inverse nanodesigns enable broadbandwidth semiconductor splitters, however, at high fabrication and design costs [3, 4]. In this work we present efficient and low-cost inverse design and experimental realization of multiport splitters with near-zero insertion loss, broad bandwidth and small footprint. Design is based on single-mode linearly coupled waveguide arrays which support periodic light propagation [5]. It allows for realisation of arbitrary splitting ratios by simple adjustment of waveguide separations. To demonstrate the technique, we designed equal 1×N power splitters and fabricated them in a borosilicate wafer by femtosecond laser writing method. The splitters show zero insertion loss within the experimental error, bandwidth of 20−60 nm and low im...balance < 0.5 dB. Their footprint scales exponentially with the waveguide separation, which can be reduced to the limit of mode confinement. Remarkably, the splitting ratio can be wavelength and array-length tuned. The proposed splitters offer new possibilities for path-entanglement generation, multipath interferometery on chip [6] and spatial mode multiplexing [7].
Извор:
16th Photonics Workshop (Conference) : Book of abstracts, 2023, 19-19Издавач:
- Belgrade : Institute of Physics
Финансирање / пројекти:
- Утицај цитоплазматичке мушке стерилности и ксенија на принос зрна и агрономске особине кукуруза (RS-MESTD-MPN2006-2010-20017)
Напомена:
- XVI Photonics Workshop : book of abstracts; March 12-15, 2023; Kopaonik
- 16th Photonics Workshop : March 12-15, 2023; Kopaonik, 2023.
Колекције
Институција/група
VinčaTY - CONF AU - Vildoso, Paloma AU - Vicencio, Rodrigo A. AU - Petrović Jovana PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12919 AB - Conventional designs of multiport splitters rely on concatenation of directional couplers or multimode interference [1, 2]. However, the splitters show a considerable insertion loss and fast bandwidth drop with the number of ports. Inverse nanodesigns enable broadbandwidth semiconductor splitters, however, at high fabrication and design costs [3, 4]. In this work we present efficient and low-cost inverse design and experimental realization of multiport splitters with near-zero insertion loss, broad bandwidth and small footprint. Design is based on single-mode linearly coupled waveguide arrays which support periodic light propagation [5]. It allows for realisation of arbitrary splitting ratios by simple adjustment of waveguide separations. To demonstrate the technique, we designed equal 1×N power splitters and fabricated them in a borosilicate wafer by femtosecond laser writing method. The splitters show zero insertion loss within the experimental error, bandwidth of 20−60 nm and low imbalance < 0.5 dB. Their footprint scales exponentially with the waveguide separation, which can be reduced to the limit of mode confinement. Remarkably, the splitting ratio can be wavelength and array-length tuned. The proposed splitters offer new possibilities for path-entanglement generation, multipath interferometery on chip [6] and spatial mode multiplexing [7]. PB - Belgrade : Institute of Physics C3 - 16th Photonics Workshop (Conference) : Book of abstracts T1 - Ultra-low-loss broadband multiport optical splitters SP - 19 EP - 19 UR - https://hdl.handle.net/21.15107/rcub_vinar_12919 ER -
@conference{ author = "Vildoso, Paloma and Vicencio, Rodrigo A. and Petrović Jovana", year = "2023", abstract = "Conventional designs of multiport splitters rely on concatenation of directional couplers or multimode interference [1, 2]. However, the splitters show a considerable insertion loss and fast bandwidth drop with the number of ports. Inverse nanodesigns enable broadbandwidth semiconductor splitters, however, at high fabrication and design costs [3, 4]. In this work we present efficient and low-cost inverse design and experimental realization of multiport splitters with near-zero insertion loss, broad bandwidth and small footprint. Design is based on single-mode linearly coupled waveguide arrays which support periodic light propagation [5]. It allows for realisation of arbitrary splitting ratios by simple adjustment of waveguide separations. To demonstrate the technique, we designed equal 1×N power splitters and fabricated them in a borosilicate wafer by femtosecond laser writing method. The splitters show zero insertion loss within the experimental error, bandwidth of 20−60 nm and low imbalance < 0.5 dB. Their footprint scales exponentially with the waveguide separation, which can be reduced to the limit of mode confinement. Remarkably, the splitting ratio can be wavelength and array-length tuned. The proposed splitters offer new possibilities for path-entanglement generation, multipath interferometery on chip [6] and spatial mode multiplexing [7].", publisher = "Belgrade : Institute of Physics", journal = "16th Photonics Workshop (Conference) : Book of abstracts", title = "Ultra-low-loss broadband multiport optical splitters", pages = "19-19", url = "https://hdl.handle.net/21.15107/rcub_vinar_12919" }
Vildoso, P., Vicencio, R. A.,& Petrović Jovana. (2023). Ultra-low-loss broadband multiport optical splitters. in 16th Photonics Workshop (Conference) : Book of abstracts Belgrade : Institute of Physics., 19-19. https://hdl.handle.net/21.15107/rcub_vinar_12919
Vildoso P, Vicencio RA, Petrović Jovana. Ultra-low-loss broadband multiport optical splitters. in 16th Photonics Workshop (Conference) : Book of abstracts. 2023;:19-19. https://hdl.handle.net/21.15107/rcub_vinar_12919 .
Vildoso, Paloma, Vicencio, Rodrigo A., Petrović Jovana, "Ultra-low-loss broadband multiport optical splitters" in 16th Photonics Workshop (Conference) : Book of abstracts (2023):19-19, https://hdl.handle.net/21.15107/rcub_vinar_12919 .