BICSI Certification BICSI Fiber Optic Systems 2 — Questions and Answers
Question 1: What is the IEC standard classification for a physical-contact (PC) optical fiber connector polish?
- IEC Grade A
- IEC Grade B (Correct answer)
- IEC Grade C
- IEC Grade D
Correct answer: IEC Grade B
IEC 61300-3-35 classifies physical-contact (PC) polished connectors as Grade B, with defined limits for scratch and pit defects on the ferrule end-face.
Question 2: Which wavelength is primarily used for testing and transmitting data on OM3/OM4 laser-optimized multimode fiber?
- 1310 nm
- 1550 nm
- 850 nm (Correct answer)
- 1625 nm
Correct answer: 850 nm
OM3 and OM4 multimode fibers are laser-optimized for use with 850 nm VCSELs, which are cost-effective light sources for short-distance applications.
Question 3: What is the minimum bend radius for optical fiber cable during installation to prevent signal loss and physical damage?
- 10 times the cable diameter
- 20 times the cable diameter (Correct answer)
- 30 times the cable diameter
- 40 times the cable diameter
Correct answer: 20 times the cable diameter
During installation, the minimum bend radius for optical fiber cable is 20 times the cable outer diameter to prevent microbending losses and physical damage.
Question 4: In a BICSI fiber optic system, what is the purpose of using an APC (angled physical contact) connector?
- To increase connector insertion durability
- To reduce back-reflection (return loss) by angling the ferrule end-face (Correct answer)
- To simplify field termination without polishing
- To allow use with both single-mode and multimode fiber
Correct answer: To reduce back-reflection (return loss) by angling the ferrule end-face
APC connectors have an 8-degree angled end-face that redirects reflected light away from the fiber core, significantly reducing back-reflection (return loss).
Question 5: What maximum channel loss budget does ANSI/TIA-568 allow for an OM4 multimode fiber horizontal channel?
- 1.0 dB
- 1.5 dB
- 2.0 dB
- 2.9 dB (Correct answer)
Correct answer: 2.9 dB
ANSI/TIA-568 specifies a maximum channel loss budget of 2.9 dB for an OM4 multimode fiber horizontal channel, covering the cable and connectors.
Question 6: Which testing method is recommended by BICSI and TIA for certifying installed fiber optic cabling links?
- OTDR trace only
- Light source and power meter (insertion loss method) (Correct answer)
- Visual fault locator inspection
- Chromatic dispersion measurement
Correct answer: Light source and power meter (insertion loss method)
BICSI and ANSI/TIA-568 recommend the light source and power meter (insertion loss) method as the primary certification test for installed fiber optic cabling links.
BICSI Certification BICSI Fiber Optic Systems 2
What is the IEC standard classification for a physical-contact (PC) optical fiber connector polish?