Fiber Transmisson Systems
what does WDM stand for?
Wavelength Division Multiplexing
what type of light source is used to test singlemode?
Laser
The SC and LC connectors have different size ferrules and can be mated
False
Any cable that contains metallic conductors must be properly grounded and bonded.
True
Singlemode fiber has ________ bandwidth than multimode fiber.
More
Singlemode transceivers use _____ sources for their higher coupled power and bandwidth.
1. F-P Laser
2.DFB Laser
what type of testing instrument is used to test the insertion loss of the cable?
OLTS or other light sources and power meter
What is needed to get low loss from a prepolished/splice connector?
Good Cleave
ALL outdoor cables are specifically designed to
To prevent rodent damage
What is the core size of singlemode fiber
9 Microns
Multimode transceivers use _____ sources depending on their requirements for coupled power and bandwidth.
1. LED
2.VCSEL
3.F-P Laser
OTDR's are used in outside plant cables to?
2. measure length
3. find faults
In singlemode connectors, ______ is as important as low loss.
Low Reflectance
Loose tube cable requires a __________ to terminate with connectors
Breakout kit
Which fiber typically has the largest core?
POF
wavelengths at 850 nm links can use ______detectors in the receiver.
Silicon
The total loss of the fiber in the cable plant is calculated by multiplying the attenuation coefficient of the fiber by the?
Length
Physical contact (PC) polish on connectors is designed to reduce _____.
Loss and reflectance
Cables with metallic conductors as well as fiber are called
Composite Cable
what is the diameter of the core for OM2, OM3, and OM4
50 microns
What is LED's limited use in what systems?
250 MHz or 200 Mb/s
The standard method of testing installed multimode cables in a cable plant is described in
OFSTP-14
Factory terminations, such as used for making patchcords, use what method of attaching the connector to the cable?
Epoxy/polish
The minimum long term bend radius of installed fiber optic cable is usually specified as no less than ________.
10 times the cable diameter
The loss of a multimode graded index fiber is greatest at _________.
850nm