Open AccessDemonstration of a 3 × 4 tunable bandwidth WSS with tunable attenuation using compact spatial light paths
Author(s) -
Dequan Xie,
Zichen Liu,
Quan You,
Shaohua Yu
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.011173
Subject(s) - optics , attenuation , bandwidth (computing) , insertion loss , wavelength , materials science , optical fiber , optical attenuator , optical switch , wavelength division multiplexing , optical communication , optoelectronics , physics , telecommunications , computer science , multi mode optical fiber
M × N wavelength selective switch (WSS) is a core component to address wavelength conflict in an optical switching node. In this paper, we design and experimentally demonstrate a performance enhanced 3 × 4 tunable bandwidth WSS (TBWSS) with tunable attenuation across the full C-band, and using compact spatial light paths. Wavelength channels from any input optical fiber port can be switched into any output optical fiber port with best insertion loss (IL) of 8.4 dB and worst IL of 12.5 dB. The attenuation tuning range can reach up to 35 dB. Compared to previous demonstrations, more than 2 dB IL improvement is achieved. Based on the proposed compact spatial light paths, the number of input and output ports can be easily extended to 10 and 20, respectively.