EE 230: Optical Fiber Communication

Description
Components and system design of optical fiber communication. Topics include: step-index fibers, graded-index fibers, fiber modes, single-mode fibers, multimode fibers, dispersion, loss mechanics, fiber fabrication, light-emission processes in semiconductors, light-emitting diodes, laser diodes, modulation response, source-fiber coupling, photodetectors, receivers, receiver noise and sensitivity, system design, power budget and rise-time budget, fiber-optic networks (FDDI, SONET, etc.), wavelength-division multiplexing (WDM).

Intended audience: Graduate or advanced undergraduate students.
Prerequisite: Instructor permission
Textbook: "Fiber-Optic Communication Systems" (Second edition) by Agrawal.

Time: Tuesday/Thursday 12-1:45pm
Location: Porter Acad 246

Course Instructor

Ken Pedrotti

253CJack Baskin Engineering Building

Phone: (831) 459-1229

E-mail: pedrotti@soe.ucsc.edu

Office hours: Tu 2-4p

Course News and Announcements:

The course projects will be due on March 14 at the beginning of the last course lecture.

There will be 6 project presentations, we will have two on March 12 and the rest on March 14. Zhixi Bian and Yan Zhang will go first on the 12th, everyone else will present on the 14th.

The presentations should be timed for 20 minutes with 5-10 minutes for questions, which you are expected to have and ask...

There will be one more homework assignment due on March 12. It is posted below.

Tentative Schedule

Date

Lect.

Topic

Reading

Jan. 3

1

Introduction

Chapt. 1

Jan. 8

2

Fibers-Geometrical Optics Description

Chapt 2

Jan. 10

3

Fibers-Fiber Modes

Chapt 2/Handouts

Jan. 15

4

Fibers-Dispersion/Fabrication

Chapt 2

Jan. 17

5

Fibers Nonlinear Effects-

Handouts

Jan. 22

6

Fibers Nonlinear Effects-Self Phase Modulation-Cross Phase Modulation-Solitons

Handouts/Chapt 2.Chapt 10.1

Jan. 24

7

Fibers Nonlinear Effects-Four Wave Mixing-Raman Scattering-Brillioun Scattering

Handouts/Chapt. 2

Jan. 29

8

Fiber Amplifiers-Basics-Semiconductor Amps

Chapt 8/Handouts

Jan. 31

9

Fiber amplifiers-Doped Fiber/Raman

Chapt 8/Handouts

Feb. 5

10

Midterm

Feb. 7

11

Sources and Transmitters

Chapt 3

Feb. 14

12

Detectors and Receivers

Chapt 4

Feb. 19

13

Detectors and Receivers

Chapt 4

Feb. 21

14

Receiver Noise and Sensitivity

Chapt 4

Feb. 26

15

Systems

Chapt 5

Feb. 28

16

Dispersion Compensation

Chapt 9

Mar. 5

17

TDM Systems

Chapt 10

Mar. 7

18

WDM Systems

Chapt 7

Mar. 12

19

WDM Systems-Project Presentations

Chapt 7

Mar. 14

20

Project Presentations

Final 19

21

Final Exam 12-3pm

Homework Assignments

Homeworks will be assigned every other week and collected during class sessions. Late homework will not be accepted or graded. Homework is graded in terms of it being complete, well organized, readable and showing evidence of thoughtful attention to the problem itself. Sloppy submissions will not be considered for grading.

Course Outline

Fibers:

Step-index fibers, graded-index fibers.
Fiber modes, single-mode fibers, multimode fibers.
Dispersion, mode coupling, and loss mechanics.
Glass materials, fiber fabrication, and characterization
techniques.

Fiber Non-linear Effects

Self Phase modulation, Cross phase modulation, Four Wave Mixing, Stimulated Brillouin Scattering, Stimulated Raman Scattering

Optical Amplifiers

Semiconductor Optical Amplifiers, Doped Fiber Amplifiers, Raman Amplifiers

Sources and Transmitters:

Light-emission processes in semiconductors.
Light-emitting diodes (LEDs).
Semiconductor lasers, (laser diodes: LDs).
Modulation response.
Source-fiber coupling.

Detectors and Receivers:

Photodetectors, receivers.
Receiver noise and sensitivity.

Systems:

System design: power budget and rise-time budget.
Single-Wavelength Fiber-Optic Networks (FDDI, SONET)
Wavelength-Division Multiplexing (WDM)

Grading Method

The course will not be graded on a curve. It is possible for everyone to earn an "A" or for everyone to earn an "F". Getting 50% in the final is mandatory in order to pass the class.

Tentative Grading
Course Element:	Percentage of Course Grade:
Homework	20%
Midterm	20%
Final Exam	30%
Project	30%
Total	100

Additional Reference Materials

Fundamentals of Photonics by Saleh and Teich

A broad and high level treatment of material relavent to this class and much more. Highly recommended if you plan to do work in this area

Fiber Optic Communicatons by Joseph Palais

Well known and complete reference to the field but more discursive than Saleh and Teich

Fiber-Optic Communications Technology-Mynbaev and Scheiner

A new book with graded chapter difficulty, a very practical slant on the subject

Nonlinear Fiber Optics-Agrawal

This and the following cover many advanced topics of importance for emerging high bandwidth transmission systems

Applications of Nonlinear Fiber Optics-Agrawal

There are a number of interesting Websites available. If you find others, let me know so they can be added to the list for next years' students!

A list of short tutorial Overviews http://www.lightreading.com/section.asp?section_id=29

A practical how-to online course http://www.fotec.com/fiberu-online/fuonline.htm

A short history of Optics http://members.aol.com/WSRNet/D1/hist.htm

Semiconductor Materials and Devices - some neat animated stuff! http://jas.eng.buffalo.edu/applets/education/index2.html

Interesting Stuff

Photonic Crystals

MIT Prof. Joannopoulos http://ab-initio.mit.edu/photons/index.html

UCLA Prof. Yablonovich http://www.ee.ucla.edu/labs/photon/homepage.html

Course Expectations

Learning occurs by the active involvement of the student. The student is expected to come to class prepared to think and learn. The lecture period will be used to establish fundamental concepts. During lecture time, you will be asked to participate in solving problems. Always bring your calculator. It also is helpful to bring your textbook along.

To get the most out of this class, you need to read the assigned sections in the textbook before coming to class.

Working Together

You are encouraged to work in groups and discuss about the homework assignments. However, each has to write his/her own solution and fully understand them.

Academic Dishonesty
Any confirmed academic dishonesty including but not limited to copying homeworks or cheating on exams, will result in a no-pass or failing grade. You are encouraged to read the campus policies regarding academic integrity. Examples of cheating include (but are not limited to):

Sharing results or other information during an examination.
Working on an exam before or after the official time allowed.
Submitting homework that is not your own work.
Reading another student's homework solution before it is due.
Allowing someone else to read your homework solution before the assignment is due.

If there is any question as to whether a given action might be construed as cheating, see me before you engage in any such action.

Ken Pedrotti

Last updated: 3/4//2002

Date	Lect.	Topic	Reading
Jan. 3	1	Introduction	Chapt. 1
Jan. 8	2	Fibers-Geometrical Optics Description	Chapt 2
Jan. 10	3	Fibers-Fiber Modes	Chapt 2/Handouts
Jan. 15	4	Fibers-Dispersion/Fabrication	Chapt 2
Jan. 17	5	Fibers Nonlinear Effects-	Handouts
Jan. 22	6	Fibers Nonlinear Effects-Self Phase Modulation-Cross Phase Modulation-Solitons	Handouts/Chapt 2.Chapt 10.1
Jan. 24	7	Fibers Nonlinear Effects-Four Wave Mixing-Raman Scattering-Brillioun Scattering	Handouts/Chapt. 2
Jan. 29	8	Fiber Amplifiers-Basics-Semiconductor Amps	Chapt 8/Handouts
Jan. 31	9	Fiber amplifiers-Doped Fiber/Raman	Chapt 8/Handouts
Feb. 5	10	Midterm
Feb. 7	11	Sources and Transmitters	Chapt 3
Feb. 14	12	Detectors and Receivers	Chapt 4
Feb. 19	13	Detectors and Receivers	Chapt 4
Feb. 21	14	Receiver Noise and Sensitivity	Chapt 4
Feb. 26	15	Systems	Chapt 5
Feb. 28	16	Dispersion Compensation	Chapt 9
Mar. 5	17	TDM Systems	Chapt 10
Mar. 7	18	WDM Systems	Chapt 7
Mar. 12	19	WDM Systems-Project Presentations	Chapt 7
Mar. 14	20	Project Presentations
Final 19	21	Final Exam 12-3pm