Open AccessHighly alignment tolerant and high-sensitivity 100Gb/s (4 × 25Gb/s) APD-ROSA with a thin-film filter-based de-multiplexer
Author(s) -
Jin Woo Huh,
Sae-Kyoung Kang,
Jie Hyun Lee,
Joon Ki Lee,
Sun-Me Kim
Publication year - 2016
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.24.027104
Subject(s) - multiplexer , avalanche photodiode , optics , sensitivity (control systems) , photodiode , optical filter , materials science , optoelectronics , filter (signal processing) , physics , multiplexing , computer science , telecommunications , electronic engineering , detector , engineering , computer vision
We investigate and demonstrate a 100-Gb/s (4x25-Gb/s) receiver optical sub-assembly (ROSA) based on avalanche photodiodes and a thin-film filter-based de-multiplexer. The overall alignment tolerances of the ROSA are relaxed to have larger than ± 25 μm by improving optical coupling structure. The receiver sensitivity of each lane is also measured to be less than -22.2 dBm, a record minimum to our knowledge, at the bit error ratio of 10 -12 for 25.78-Gb/s NRZ signal.