Ch1Sec5BW

Ch1Sec5BW - THE FIBER FORUM Fiber Optic Communications...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
THE FIBER FORUM Fiber Optic Communications JOSEPH C. PALAIS PRESENTED BY
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Joseph C. Palais 1.5 2 Section 1.5 Applications of Fiber Systems 1) Cable TV: Frequency-division-multiplexing (FDM) is used to transmit television signals over fiber systems. Each television channel has a bandwidth of 6 MHz. Power 0 f (Hz) 6 MHz TV Baseband Signal
Background image of page 2
Joseph C. Palais 1.5 3 FREQUENCY DIVISION MULTIPLEXING Power 0 f (Hz) 6 MHz TV Channel f o The television signal can be modulated onto a sub-carrier frequency f o . The baseband signal has been shifted upwards in frequency. sub-carrier
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Joseph C. Palais 1.5 4 FREQUENCY DIVISION MULTIPLEXING (FDM) Electrical 0 f (Hz) 6 MHz 1 f 1 Several television channels can be multiplexed onto different sub-carrier frequencies and the result used to modulate a light source. f 3 f 2 f 4 6 MHz 6 MHz 6 MHz 2 3 4 Sub-Carrier Frequencies Channels
Background image of page 4
Joseph C. Palais 1.5 5 FREQUENCY DIVISION MULTIPLEXING (FDM) At the receiver the television signals are demultiplexed by filters. Several tens of television channels can be transmitted by frequency- division-multiplexing (FDM) on a single fiber.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Joseph C. Palais
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 10

Ch1Sec5BW - THE FIBER FORUM Fiber Optic Communications...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online