Tootfinder

Optical Link Tomography: First Field Trial and 4D Extension
Takeo Sasai, Giacomo Borraccini, Yue-Kai Huang, Hideki Nishizawa, Zehao Wang, Tingjun Chen, Yoshiaki Sone, Minami Takahashi, Tatsuya Matsumura, Masanori Nakamura, Etsushi Yamazaki, Koichi Takasugi, Ting Wang, Yoshiaki Kisaka
https://arxiv.org/abs/2510.09384

Optical Link Tomography: First Field Trial and 4D Extension
Optical link tomography (OLT) is a rapidly evolving field that allows the multi-span, end-to-end visualization of optical power along fiber links in multiple dimensions from network endpoints, solely by processing signals received at coherent receivers. This paper has two objectives: (1) to report the first field trial of OLT, using a commercial transponder under standard DWDM transmission, and (2) to extend its capability to visualize across 4D (distance, time, frequency, and polarization), al…

On Friday Oct. 10, MIT President Sally Kornbluth formally rejected the Trump administration's proposed compact in an email to the U.S. Education Secretary Linda McMahon.
This decision came after mounting pressure from many MIT organizations, students and faculty alike, that called on the Institute to formally reject the compact.
MIT is the first university to openly decline the compact.
The Institute’s Response
In her response to Secretary McMahon, President Kornbl…

BREAKING: MIT rejects federal compact | The Tech
On Friday Oct. 10, MIT President Sally Kornbluth formally rejected the Trump administration's proposed compact in an email to the U.S. Education Secretary Linda McMahon.