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ΠΑΡΑΔΕΙΓΜΑ ΟΠΤΟΗΛΕΚΤΡΟΝΙΚΗΣ ΖΕΥΞΗΣ PowerPoint PPT Presentation


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ΠΑΡΑΔΕΙΓΜΑ ΟΠΤΟΗΛΕΚΤΡΟΝΙΚΗΣ ΖΕΥΞΗΣ. Actual Power. Optical Power Level. Minimum optical power required by the receiver. 0.1 µ W. -40 dBm. Source output optical power. 1 mW. 0 dBm. Total operating budget (optical power). 40. SNR voltage ratio required in the receiver is 36 dB.

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ΠΑΡΑΔΕΙΓΜΑ ΟΠΤΟΗΛΕΚΤΡΟΝΙΚΗΣ ΖΕΥΞΗΣ

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5827246

ΠΑΡΑΔΕΙΓΜΑ

ΟΠΤΟΗΛΕΚΤΡΟΝΙΚΗΣ ΖΕΥΞΗΣ


5827246

Actual Power

Optical Power Level

Minimum optical power required by the receiver

0.1µW

-40 dBm

Source output optical power

1 mW

0 dBm

Total operating budget (optical power)

40

SNR voltage ratio required in the receiver is 36 dB.

The equivalent optical power ratio is*

18 dB

Remaining optical power for link

22 dB

Link optical power losses:

Cable 15 dB

Connectors 3 dB

Couplings 2 dB

Total 20 dB

Excess Budget

2 dB

Typical Optical Link Power Budget:


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Typical Optical Link Power Budget:


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Specifications For Fiber Optic Networks

Here is a listing of many fiber optic LANs and links available in the last 20 years, with basic operational specs.

NA = Not Applicable

NS = Not Specified

Most LANs and links not specified to run on SM fiber have media converters available to allow them to run on SM fiber.


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 Application

Wavelength

 Max distance (m)

for fiber type

Link Margin (dB)

for fiber type

 62.5

50

SM

 62.5

50

SM

 10Base-F

850

 2000

2000

NS

12.5

7.8

NS

 FOIRL

850

2000

NS

NS

8

NS

NS

T oken Ring 4/16

 850

2000

2000

NS

13

8.3

NS

 Demand Priority

(100VG-AnyLAN)

 850

500

 500

NS

7.5

2.8

NS

 Demand Priority

(100VG-AnyLAN)

1300

2000

2000

NS

7.0

2.3

 NS

 100Base-FX

(Fast Ethernet)

 1300

 2000

2000

NS

11

6.3

 NS

 100Base-SX

850

 300

300

NS

4.0

4.0

 NS

 FDDI

 1300

 2000

2000

40000

11.0

6.3

10-32

 FDDI (low cost)

 1300

 500

500

NA

7.0

2.3

NA


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 ATM 52

 Application

1300

Wavelength

3000

 Max distance (m)

for fiber type

3000

15000

 10

5.3

Link Margin (dB)

for fiber type

7-12

 ATM 155

 1300

2000

 62.5

2000

15000

50

10

SM

5.3

 62.5

7-12

50

SM

 ATM 155

 850(laser)

1000

1000

NA

7.2

7.2

NA

 ATM 622

1300

500

500

15000

6.0

1.3

7-12

 ATM 622

 850(laser)

 300

300

NA

4.0

4.0

NA

 Fibre Channel 266

 1300

 1500

1500

10000

6.0

5.5

6-14

 Fibre Channel 266

 850(laser)

700

2000

NA

12.0

12.0

NA

 Fibre Channel 1062

850(laser)

300

500

NA

4.0

4.0

NA

Fibre Channel 1062

 1300

NA

NA

10000

NA

NA

6-14

 1000Base-SX

850(laser)

 220

550

NA

3.2

3.9

NA

1000Base-LX

 1300

550

550

5000

4.0

3.5

4.7

 ESCON

1300

3000

 NS

20000

11

 NS

16


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