Fiber Optics Exam Practice Questions
and Answers
What type of light is used in fiber optic transmission? - Answer-Infrared
What are the 4 items are needed for a fiber optic system to work? - Answer-Transmitter
Fiber cable
Receiver
Connectors
1 mw is the same as what in dBm? - Answer-0 dBm
H...
What light source is used for single mode fiber? - Answer✔✔-Laser diode
What two light sources are used with multimode fiber? - Answer✔✔-LED and VCSEL
All wavelengths of light travel at the same speed?
True or false - Answer✔✔-False
Which type of fiber has the larger core size? Single mode or multimode - Answer✔✔-
Multimode
What is OSHA responsible for? - Answer✔✔-To enforce safety precautions
What are the two ways to reduce modal dispersion? - Answer✔✔-Use graded index fiber.
Shrink the core size.
What happens to the wavelength in optical fiber when the number of modes increase? -
Answer✔✔-The wavelength gets shorter
Where does fresnel reflection occur? - Answer✔✔-At the air gap
Inter mechanical connection
What is it called when light bends when moving between water and air? - Answer✔✔-refraction
What is the refractive index of the core and cladding of MM optical fiber? - Answer✔✔-1.42 is
for cladding
1.457 is for the core
Page 2/10
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Emillect. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
