Parasitic erbium photoluminescence in commercial telecom fiber optical components

• URL: http://arxiv.org/abs/2108.10126v1
• Date: Fri, 13 Aug 2021 22:41:56 GMT
• Title: Parasitic erbium photoluminescence in commercial telecom fiber optical components
• Authors: Gary Wolfowicz, F. Joseph Heremans, David D. Awschalom
• Abstract summary: We characterize telecom C-band fiber components for parasitic noise using a tunable laser. Due to the long erbium lifetime, these signals are challenging to mitigate at the single photon level in the telecom range.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Noiseless optical components are critical for applications ranging from metrology to quantum communication. Here we characterize several commercial telecom C-band fiber components for parasitic noise using a tunable laser. We observe the spectral signature of trace concentrations of erbium in all devices from the underlying optical crystals including YVO4, LiNbO3, TeO2 and AMTIR glass. Due to the long erbium lifetime, these signals are challenging to mitigate at the single photon level in the telecom range, and suggests the need for higher purity optical crystals.

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