Comparison of Silicon Lattice-Filter-Based O-Band 1×8 (De)Multiplexers With Flat and Gaussian-Like Passbands

Ning, Nannan; Wang, Xiaofei; Yu, Hui; Huang, Qikai; Yang, Jianyi; Wang, Yuehai

doi:10.1109/jphot.2022.3149320

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…It is also worthwhile to note that the anisotropy-free design strategy here is based solely on the basic waveguide characteristics, and is not confined only for AWGs and TFLN. In fact, any other devices, such as lattice filters based on Mach-Zehnder interferometers [43], that require certain defined phase and group delay relations, or any other in-plane uniaxial anisotropic platforms, such as thinfilm lithium tantalate [44], can also adopt this universal strategy to remove the anisotropy in their designs. The measured AWG performances here are still limited by the phase errors resulted from the fabrication variation in the widths of the arrayed waveguides.…”

Section: Discussionmentioning

confidence: 99%

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Liu,

YI,

Guo

et al. 2024

Preprint

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Arrayed waveguide grating is a versatile and scalable integrated light dispersion device, which has been widely adopted in various applications, including, optical communications and optical sensing. Recently, thin-film lithium niobate emerges as a promising photonic integration platform, due to its ability of shrinking largely the size of typical lithium niobate based optical devices and possible integration of them on a chip. However, due to the intrinsic anisotropy of the material, to build an arrayed waveguide grating on X-cut thin-film lithium niobate has never been successful. Here, a universal strategy to design anisotropy-free dispersive components on a uniaxial in-plane anisotropic photonic integration platform is introduced for the first time. This leads to the first implementation of arrayed waveguide gratings on X-cut thin-film lithium niobate with various configurations and high-performances. The best insertion loss of 2.4dB and crosstalk of -24.1dB is obtained for the fabricated arrayed waveguide grating devices. Applications of such arrayed waveguide gratings as a wavelength router and in a wavelength-division multiplexed optical transmission system are also demonstrated.

show abstract

Section: Discussionmentioning

confidence: 99%

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Liu,

YI,

Guo

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…It is also worthwhile to note that the anisotropy-free design strategy here is based solely on the basic waveguide characteristics, and is not confined only for AWGs and TFLN. In fact, any other devices, such as lattice filters based on Mach-Zehnder interferometers 43 , that require certain defined phase and group delay relations, or any other in-plane uniaxial anisotropic platforms, such as thin-film lithium tantalate 44 , can also adopt this universal strategy to remove the anisotropy in their designs. The measured AWG performances here are still limited by the phase errors resulted from the fabrication variation in the widths of the arrayed waveguides.…”

Section: Discussionmentioning

confidence: 99%

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Yi,

Guo,

Ruan

et al. 2024

Light Sci Appl

View full text Add to dashboard Cite

Arrayed waveguide grating is a versatile and scalable integrated light dispersion device, which has been widely adopted in various applications, including, optical communications and optical sensing. Recently, thin-film lithium niobate emerges as a promising photonic integration platform, due to its ability of shrinking largely the size of typical lithium niobate based optical devices. This would also enable multifunctional photonic integrated chips on a single lithium niobate substrate. However, due to the intrinsic anisotropy of the material, to build an arrayed waveguide grating on X-cut thin-film lithium niobate has never been successful. Here, a universal strategy to design anisotropy-free dispersive components on a uniaxial in-plane anisotropic photonic integration platform is introduced for the first time. This leads to the first implementation of arrayed waveguide gratings on X-cut thin-film lithium niobate with various configurations and high-performances. The best insertion loss of 2.4 dB and crosstalk of −24.1 dB is obtained for the fabricated arrayed waveguide grating devices. Applications of such arrayed waveguide gratings as a wavelength router and in a wavelength-division multiplexed optical transmission system are also demonstrated.

show abstract

“…Considerable efforts have been devoted to the development of optical filters on silicon-on-insulator (SOI) platform. Common methods used to realize silicon photonic filters are micro-ring resonator (MRRs) [13], cascaded Mach-Zehnder interferometer (MZI) lattice filter [14,15], arrayed waveguide gratings (AWGs) [16][17][18], planar concave gratings (EDGs) [18], and Bragg grating filter [10,11,19], etc. However, MRR-based optical filter suffers from narrow passband and requires active thermal control to correct the wavelength shift.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Broadband Optical Filter Based on step-chirped Multimode Waveguide Bragg Grating

et al. 2024

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An ultra-broadband optical filter based on stepchirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating length of SCMWBG is divided into grating segments with constant periods, and the period of each segment increases in a fixed step length of 1 nm. Each grating segment of the proposed SCMWBG is designed according to the phase-matching condition. The device is fabricated by a 193 nm DUV lithography, and employs complementary lateralmisalignment apodization to suppress the sidelobes. The measured insertion loss, SLSR and 3-dB bandwidth of fabricated SCMWBG are 1.2 dB, 17 dB and 72 nm, respectively.

show abstract

Comparison of Silicon Lattice-Filter-Based O-Band 1×8 (De)Multiplexers With Flat and Gaussian-Like Passbands

Cited by 11 publications

References 20 publications

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Ultra-Broadband Optical Filter Based on step-chirped Multimode Waveguide Bragg Grating

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