Question: 9 . An LED has a circular emitting region with a radius of 2 0 pm . The pattern is assumed Lambertian with an axial

9. An LED has a circular emitting region with a radius of 20 pm. The pattern is assumed Lambertian
with an axial radiance of 80 W.~m-~.sr-' at a 100 mA drive current.
(a) Calculate the coupling efficiency and the optical power coupled into a stepindex fiber with
a 140 pm core diameter and NA =0.20.
(b) Repeat the calculation for a 50 pm diameter graded-index fiber with a parabolic-index profile,
a center index of 1.48, and A

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Electrical Engineering Questions!

Q:

Figure 6.5, panel A, illustrates technical inefficiency for firms with a one-input production function. It was explained that ineffi ciency could be measured by output distance or, alternatively,...

Q:

The experimental result differs from the assumption. The result shows that the ring oscillator frequencies can be grouped into two groups, where the first group is the high frequency group for the...

Q:

Using "On the Spectrum of Hydrogen" by Niels Bohr -What is the main idea of the Author's argument? What is the main essence of the piece? -What ways does the author use to propose and support their...

Q:

Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...

Q:

Problem 2B.15. Shell momentum balances and pressure distribution for flow through a circular tube. In example 2.3, only the z momentum balance was derived. Answer the following questions. a. Derive...

Q:

Case 11 Equal Exchange: Doing Well by Doing Good1 Rev. Dr. Benita W. Harris Asbury United Methodist Church Frank Shipper, PhD Perdue School of Business, Salisbury University Karen P. Manz Author and...

Q:

From the article Advisory Circular (AC) 120-74B "Flightcrew Procedures During Taxi Operations" provided at the end: Answer the following questions in detail: Why have runway incursions become more...

Q:

ERA OF QUALITY AT THE AKSHAYA PATRA FOUNDATION Era of Quality at the Akshaya Patra Foundation Quality is all about delivering a safe, tasty, nutritious, hot meal on time and every time. Muralidhar,...

Q:

Part 1 - You will use the Arduino analogWrite function to control the brightness of LEDs, display the analog pin voltage, and the current through the led. This sketch uses the analogWrite function to...

Q:

CASE STUDY: LIGHTING THE WAY AT THE MANOR HOUSE HOTEL Andre and Melissa Barmore met while attending a prestigious East Coast business school. After graduation, Andre worked for several years in...

Q:

Use the Excel spreadsheet provided to compute the payback period, NPV, and IRR based on the cost SAVINGS from using the alternate Design and the LED Design system over the typical Design system. 2....

Q:

A moving-coil instrument, which gives full-scale deflection with 15 mA, has a copper coil having a resistance of 1.5 at 15 C, and a temperature coefficient of 1/234.5 at 0 C, in series with a swamp...

Q:

Use MATLAB For this question. Given, Vo = -2va4b + 9 +5va

Q:

Jodian Banfield is employed with an annual salary of $7,250,000. She receives a monthly rental income of $75,000, which is paid to her husband, Darren. Additionally, she is provided with the maximum...

Q:

Assuming that Carls market share will increase by 0.25% per year, you determine that the plant will require an expansion in 2023. The expansion will cost $20 million. Assume the following: the debt...