https://www.nec.com/en/global/prod/fod/index.html
Optical Transceiver Module : Products & Solutions | NEC
NEC has been developing and manufacturing optical transceivers for more than 30 years since the dawn of the optical communications era. Based on this extensive...
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https://tmi.yokogawa.com/solutions/products/accessories/modules/735454-lr-optical-transceiver-module/
735454-LR Optical transceiver module | Yokogawa Test & Measurement Corporation
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