RCDD · Question #1
All of the following are nominal wavelengths for laser light sources EXCEPT:
The correct answer is A. 700 nm. Standard fiber optic laser sources operate at specific nominal wavelengths defined by industry standards; 700 nm is not among them.
Question
All of the following are nominal wavelengths for laser light sources EXCEPT:
Options
- A700 nm
- B850 nm
- C1300 nm
- D1310 nm
- E1550 nm
How the community answered
(26 responses)- A77% (20)
- C8% (2)
- D12% (3)
- E4% (1)
Why each option
Standard fiber optic laser sources operate at specific nominal wavelengths defined by industry standards; 700 nm is not among them.
The nominal wavelengths recognized for fiber optic laser sources are 850 nm, 1300/1310 nm, and 1550 nm, as defined by TIA/EIA and IEEE standards. The 850 nm window is used for short-range multimode fiber, 1300/1310 nm for multimode and single-mode fiber, and 1550 nm for long-haul single-mode fiber. 700 nm falls outside all standardized fiber optic transmission windows and is not a nominal laser wavelength in any common fiber optic specification.
850 nm is a standard nominal wavelength used for short-range multimode fiber optic links.
1300 nm is a recognized nominal wavelength window used in multimode and early single-mode fiber systems.
1310 nm is a standard single-mode and multimode fiber optic wavelength defined in ITU-T and TIA specifications.
1550 nm is a standard nominal wavelength used for long-haul single-mode fiber and DWDM systems.
Concept tested: Nominal fiber optic laser wavelength standards
Source: https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/white_paper_c11_734498.html
Topics
Community Discussion
No community discussion yet for this question.