Q.2] A digital optical fiber link employing ideal binary signaling at a rate of 50 Mbit s' operates at a wavelength of 1.3 um. The detector is a germanium photodiode which has a quantum efficiency of 45% at this wavelength. An alarm is activated at the receiver when the bit-error-rate drops below 105. Calculate the theoretical minimum optical power required at the photodiode in order to keep the alarm inactivated. Comment briefly on the reasons why in practice the minimum incident optical power would need to be significantly greater than this value.

Q.2] A digital optical fiber link employing ideal binary signaling at a rate of 50 Mbit s' operates at a wavelength of 1.3 um. The detector is a germanium photodiode which has a quantum efficiency of 45% at this wavelength. An alarm is activated at the receiver when the bit-error-rate drops below 105. Calculate the theoretical minimum optical power required at the photodiode in order to keep the alarm inactivated. Comment briefly on the reasons why in practice the minimum incident optical power would need to be significantly greater than this value.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Draw a 4:1 multiplexer using 2:1 multiplexers
4c. With the aid of a diagram discusses the incorporation of demodulator and detector circuit in communication system.
Enumerate 10 important Electrical Materials and briefly describe each.
make an introduction of at least 30 lines about PROTOTYPE OF PIEZOELECTRIC BALLAST FOR GENERATING ELECTRIC ENERGY THROUGH THE PEDESTRIAN TRAFFIC
I need this answer
i need the answer quickly
The wave power per length is 1407 W/m, the device-width of the wave energy system is 7.5 m, the capture width ratio is 0.4, the rated power is 12772 W. Determine the percentage degree of utilization. 29.74 28.09 33.05 O 36.35
Please answer quickly thank you
1/ Identify the signal processor from the below following. a. Strain Gauge b. Piezoelectric Accelerometer c. Thermistor d. Wheatstone Bridge
Fill in the blank: is the tool which left only the core and the cladding and remove the coating from the simple fiber.
The reflection coefficient for a device is found to be 0.75. What will be the corresponding return loss of the device?
What is the main difference between a semiconductor and an insulator? a)An insulator contains no electrons in the valence band. b)An insulator has a much smaller band gap than a semiconductor. c)An insulator has a much larger band gap than a semiconductor. d)An insulator contains no electrons. Previous QuestionPreviousNext QuestionNext