Nov 11, 2020 22:08
3 yrs ago
33 viewers *
English term
Not a translator
Russian Federation
Russian Federation
Native in: Russian 
SNR
English
Tech/Engineering
Telecom(munications)
Оптическая физика/Optical physics
But this is no longer valid when using a quadrature receiver, where the optical power is equally split between the in-phase and quadrature branches and the SNR degrades by 3 dB in each branch for shot-noise limited detection, leading to a performance equivalent to that of amplifier noise limited detection.
Ссылка на источник: file:///C:/Users/dima_/Downloads/High-Order%20Modulation%20for%20Optical%20Fiber%20Transmission.pdf
Ссылка на источник: file:///C:/Users/dima_/Downloads/High-Order%20Modulation%20for%20Optical%20Fiber%20Transmission.pdf
Responses
| 3 +5 | signal-to-noise ratio |
philgoddard
|
| 5 +3 | Signal-to-noise Ratio |
John Druce
|
Change log
Nov 11, 2020 10:56: Yana Dovgopol changed "Vetting" from "Needs Vetting" to "Vet OK"
Nov 11, 2020 22:08: changed "Kudoz queue" from "In queue" to "Public"
Nov 12, 2020 07:31: Tony M changed "Field" from "Science" to "Tech/Engineering"
Nov 12, 2020 10:14: writeaway changed "Field (write-in)" from "Оптическая физика" to "Оптическая физика/Optical physics"
Responses
+5
11 mins
philgoddard
United States
United States
Native in English
&
English
United States
Six languages into flawless English
Native in: English
Works in: German to English, French to English, Spanish to English, and 4 more.
Related KudoZ points
:
4
Selected
signal-to-noise ratio
would be my guess.
4 KudoZ points awarded for this answer.
Comment: "Selected automatically based on peer agreement."
+3
15 mins
John Druce
Spain
Spain
Native in English
&
English
Works in field
Spain
Native English with STEM speciality
Native in: English (Variant: British)
Works in: Spanish to English, German to English, English
Signal-to-noise Ratio
I've seen this acronym a fair bit, and it's quite a common term.
Signal-to-noise ratio is basically telling you how strong the peak or whatever you're measuring is compared to the background noise. The text is saying that when using this quadrature receiver, the signal-to-noise ratio degrades, i.e. the measurement becomes more noisy as the level of the signal being measured gets weaker and so isn't as easy to discern from the background.
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Note added at 19 mins (2020-11-11 22:27:59 GMT)
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Phil got there first, but I figure I'll leave this for the short explanation of what it means.
Signal-to-noise ratio is basically telling you how strong the peak or whatever you're measuring is compared to the background noise. The text is saying that when using this quadrature receiver, the signal-to-noise ratio degrades, i.e. the measurement becomes more noisy as the level of the signal being measured gets weaker and so isn't as easy to discern from the background.
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Note added at 19 mins (2020-11-11 22:27:59 GMT)
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Phil got there first, but I figure I'll leave this for the short explanation of what it means.
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