Pregunta de entrevista de Google

What is a simple device used in DWDM circuits to "cool" a signal.

Respuestas de entrevistas

Anónimo

18 de nov de 2016

I stated that I was not familiar with the term "cool" a signal. Perhaps if she had asked how one reduces power levels on an optic signal, I would have answered correctly.

Anónimo

13 de ene de 2017

I've only heard of an attenuator being used to weaken the DB level on fiber.