As we know that Loss in optical fibre
Lloss(dB) = 10 Log (Input Power/Output power)
so , Let Output Power =x
1.42 = 10 log (8.6 W / x W )
By solving Equation , x= 7.3 W
SO Outpower = 7.3 W option 1 correct.
A LAN uses a 500-ineter long optical fiber with a loss of 1.42 dB/km. If the...
i) A fiber has an optical loss of 0.3 dB/km. What is the optical loss of a 150 km length of this fiber in units of dBs? ii) If 1 mW of optical power at a wavelength of <lambda> = 1550 nm is coupled into this fiber, what will the output power be after 50 km?
A fiber has a loss of 0.5 dB/km at a wavelength of 1550 nm. How much power is transmitted through such a fiber (at a wavelength of 1550 nm) if the length of the fiber is 1 km, 10 km, or 100 km if 5 mW is coupled into the fiber?
A fiber has a loss of 0.5 dB/km at a wavelength of 1550 nm. How much power is transmitted through such a fiber (at a wavelength of 1550 nm) if the length of the fiber is 1 km, 10 km, or 100 km if 5 mW is coupled into the fiber?
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1. You have 25 km of optical cable with an attenuation coefficient of 0.27 dB/km. What is the total attenuation due to the cable? 3. Considering further question 1. If the power transmitted is 1 mW and the receiver sensitivity is -30 dBm what is the maximum distance of optical fiber that can be used before amplification is needed? You can assume only cable losses. 4. Considering further Question 3. What is the effect of adding connectors of loss 0.23...
Consider a 15 km long step-index fiber with n1= 1.53 and n2 = 1.50. What is the attenuation per kilometer in this fiber if an input power of 0.500 W results in the output power of 0.100 W ? Calculate the critical angle at the core-cladding interface and the NA (numerical aperture) for the fiber.
1. If the voltage gain is 2000, the decibel voltage gain is a. 40 dB c. 66 dB b. 46 dB d. 86 dB 2. The input power to a device is 10.000 W. The output power is 500 W. The power gain (GdB) in decibels is a. -13 dB b. -26 dB c. 56 dB d. 18 dB 3. Which of the following is an advantage of using dB representations of gain values? (a) Positive and negative dB values...
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Accuracy is important. Do not round intermediates and check the answer range to make sure you are correct. Values: [01] 2.08 [02] 68.47 [03] 0.239 [04] 1173.7 [05] 1403. [06] 53.8 THE CORRECT ANSWERS WILL BE IN THE FOLLOWING RANGES: 8-1a. 140, 220 Hz 8-1b. 40:0, 62:0 mA 8-2a. 70:0, 99:0 V 8-2b. 140:0, 160:0 V 8-2c. 60:0, 99:0 V 8-2d. 60:0, 90:0 V 8-3a. 40:0; 99:0 pF 8-3b. 100; 400 mV 8-3c. 1:00; 3:00 mV 8-4a. 100; 150 V...