3. Consider a commercial InGaAs pin photodiode whose responsivity is shown in the Figure. Its dark current is 3.5nA. Answer the following. a) Calculate the incident optical power required to produce a photo generated current of thrice of the dark current when a wavelength of 1700nm is incident on the photodiode. And then calculate the QE of the photodetector at 1700nm?

3. Consider a commercial InGaAs pin photodiode whose responsivity is shown in the Figure. Its dark current is 3.5nA. Answer the following. a) Calculate the incident optical power required to produce a photo generated current of thrice of the dark current when a wavelength of 1700nm is incident on the photodiode. And then calculate the QE of the photodetector at 1700nm?

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...

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Concept explainers

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.

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#3 answer the question!

3. Consider a commercial InGaAs pin photodiode whose responsivity is Responsivity (A/W)
shown in the Figure. Its dark current is 3.5nA. Answer the following.
a) Calculate the incident optical power required to produce a photo 0.8
generated current of thrice of the dark current when a wavelength
of 1700nm is incident on the photodiode. And then calculate the
QE of the photodetector at 1700nm?
1.0
0.6
0.4
0.2
0
800
1000 1200 1400 1600 1800
Wavelength (nm)
b) What would be the photocurrent if the incident power in (a) was at 1.3μm? What is the QE at
1.3μm operation?

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