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What is the definition of OSNR?
Suggested Answer: C
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The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth. This is also known as the signal-to-noise ratio (SNR), and it is a measure of how much signal is present in the optical signal compared to the noise, usually expressed in decibels (dB).
25 comments · newest first
AU
Audry
6 months ago
A seems too specific. I like the broader view in C.
JE
Jessenia
6 months ago
I prefer D. It includes noise, which is crucial.
KI
Kirby
6 months ago
Option C makes sense to me. Average power is key.
RE
Reita
6 months ago
I think OSNR is about signal quality.
WI
Winfred
6 months ago
Nah, D is the most accurate one here!
JO
Jodi
7 months ago
I thought it included distance too, like in A?
TE
Terry
7 months ago
Wait, isn’t it more complicated than just a ratio?
LI
Linn
7 months ago
Definitely option C, that’s the standard definition.
KI
Kirk
7 months ago
OSNR is all about signal vs. noise power!
KI
Kimi
7 months ago
I'm going with C, it just makes the most sense to me.
DE
Desirae
8 months ago
Hmm, I thought OSNR stood for "Optical Silly Noise Ratio"?
BE
Beula
8 months ago
D) The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.
BE
Beckie
8 months ago
C) The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
BA
Barb
8 months ago
I thought OSNR was about the ratio of signal to noise, but I’m confused about the specifics of bandwidth in the definitions.
ME
Melda
9 months ago
I feel like option D sounds right because it mentions the optical signal power including noise, but I can't recall the exact details.
UL
Ulysses
9 months ago
I remember practicing a question similar to this, and I think it had to do with the average power of the signal and noise.
EL
Elin
9 months ago
I think OSNR stands for Optical Signal-to-Noise Ratio, but I'm not sure which option correctly defines it.
LA
Lashandra
9 months ago
Wait, I think the key here is the "specific spectral bandwidth" part. The OSNR is the ratio of the average optical signal power to the average optical noise power over a certain bandwidth. That means option C is the correct definition.
IL
Iluminada
9 months ago
I've got this! The OSNR is the ratio of the output signal power to the input signal power of a device, so I'm going to go with option B.
SH
Shawn
10 months ago
Okay, I remember learning about OSNR in class. I'm pretty sure it's the ratio of the transmitted optical power to the received optical power, including both signal and noise, over a specific distance. So I'll select option A.
ET
Ettie
10 months ago
Hmm, I'm a bit confused on this one. I know OSNR has something to do with the signal-to-noise ratio, but I'm not sure which of these options is the exact definition. I'll have to think it through carefully.
PA
Paris
10 months ago
I think the definition of OSNR is the ratio between the optical signal power and the optical noise power over a specific bandwidth, so I'll go with option D.
MO
Monte
4 months ago
Definitely! The specific bandwidth part is crucial too.
TA
Tawanna
5 months ago
Yeah, it really captures the essence of OSNR.
VE
Veronique
6 months ago
I agree with you, option D makes the most sense.