Recent progress of wavelength selective switch

Y Ma, L Stewart, J Armstrong… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
Wavelength Division Multiplexing (WDM) networks with reconfigurable optical add/drop
multiplexers (ROADMs) realize automatic scheduling and restoration at the wavelength level …

First demonstration of a C+ L band CDC-ROADM with a simple node configuration using multiband switching devices

S Yamamoto, H Taniguchi, Y Kisaka, S Camatel… - Optics …, 2021 - opg.optica.org
While ultrahigh-baud-rate optical signals are effective for extending the transmission
distance of large capacity signals, they also reduce the number of wavelengths that can be …

24 [1× 12] wavelength selective switches integrated on a single 4k LCoS device

H Yang, P Wilkinson, B Robertson, S Giltrap… - Journal of Lightwave …, 2021 - opg.optica.org
This article demonstrates the design, assembly, optimisation, and characterisation of 24 [1×
12] wavelength selective switches (WSSs) based on a single set of optics and a 4k liquid …

Colorless, partially directionless, and contentionless architecture for high-degree ROADMs

Y Li, J Lin, L Zong, SK Bose… - Journal of Optical …, 2022 - ieeexplore.ieee.org
With the rapid growth of Internet traffic, there can be multiple pairs of bi-directional fibers on
a network link. This leads to the need for high-degree reconfigurable optical add/drop …

Highly compact twin 1× 35 wavelength selective switch

Z Huang, S Yang, Z Zheng, X Pan, H Li… - Journal of Lightwave …, 2023 - opg.optica.org
This paper demonstrates the design, assembly, optimisation and characterisation of a twin
1× 35 wavelength selective switches (WSSs) based on a highly dispersive silicon grating …

A transponder aggregator with efficient use of filtering function for transponder noise suppression

K Suzuki, O Moriwaki, K Hadama… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
Colorless, directionless, and contentionless reconfigurable optical add/drop multiplexing
(CDC-ROADM) provides highly flexible physical layer network configuration. Such CDC …

Phase flicker minimisation for crosstalk suppression in optical switches based on digital liquid crystal on silicon devices

J Nie, L Dong, X Tong, Y Xu, W Lin, H Yang - Optics Express, 2021 - opg.optica.org
The phase flicker in digital liquid crystal on silicon (LCOS) device introduces temporal phase
noise to the phase pattern displayed on the device. Such temporal phase noise could …

CDC ROADM design tradeoffs due to physical layer impairments in optical networks

D Sequeira, L Cancela, J Rebola - Optical Fiber Technology, 2021 - Elsevier
In this work, we assess the impact of several physical layer impairments (PLIs) on the
performance of optical networks based on colorless, directionless and contentionless …

A novel multi-granularity two-layer SDM ROADM architecture

J Zhang, B Zhu, X Yan, C Chen, M Jiang, F Hu - Optics Communications, 2021 - Elsevier
In this paper, we study the multi-granularity switching of SDM optical network. We design
and demonstrate a novel multi-granularity SDM ROADM. The optical node is a simple two …

Generative-adversarial-network-based dimensional measurement of optical waveguides

M Ota, K Yamaguchi, K Suzuki - Optics Express, 2022 - opg.optica.org
We propose a high-throughput and precise waveguide-dimensional-measurement method
consisting of a generative adversarial network (GAN) and curve-fitting-based dimensional …