Compact High-Responsivity Receiver Optical Subassembly With a Multimode-Output-Arrayed Waveguide Grating for 100-Gb/s Ethernet

Autor:	Sanjo Hiroaki, Toshihide Yoshimatsu, Yoshiyuki Doi, Toshikazu Hashimoto, Tetsuichiro Ohno, Ogawa Ikuo, Eiji Yoshida, Manabu Oguma
Rok vydání:	2015
Předmět:	Materials science Multi-mode optical fiber business.industry Atomic and Molecular Physics and Optics Photodiode law.invention Arrayed waveguide grating Responsivity Optics Transmission (telecommunications) law Distortion Insertion loss business Sensitivity (electronics)
Zdroj:	Journal of Lightwave Technology. 33:3286-3292
ISSN:	1558-2213 0733-8724
DOI:	10.1109/jlt.2015.2427367
Popis:	We developed a compact receiver optical subassembly (ROSA) for 100-Gigabit Ethernet (100 GbE) using multimode-output-arrayed waveguide grating (MM-AWG) and arrayed photodiodes (PDs). The four-channel silica-based MM-AWG has low insertion loss of less than 1 dB. The back-side-illumined PD with maximized-induced current structure provides high responsivity of 0.95 A/W. To avoid the distortion of the responsivity spectrum due to poor coupling between the multimode beam and PD, we employ a racetrack shape for the active region of the PD. The optical coupling between the MM-AWG and lens-coupled PD is optimized in terms of the flattening ratio of the racetrack shape. The fabricated ROSA has high responsivity of over 0.7 A/W with a flat-top spectrum and obtains high environmental stability thank to its large assembly tolerance of over ± 4 μm. For 4 × 25−Gb/s signals after 10-km transmission, the minimum receiver sensitivity of the ROSA has a margin of 4.8 dB for the Ethernet standard. The transmission performance with a 100-GbE transmitter optical subassembly was also confirmed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::abc5ebce4c3ce8d05c602dd7241b593a https://doi.org/10.1109/jlt.2015.2427367 Zobrazit plný text záznamu