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EE 232: Lightwave Devices

EE 232: Lightwave Devices – Spring 2020
Department of Electrical Engineering and Computer Sciences
University of California, Berkeley

Instructor:   Ming C. Wu (wu at eecs dot berkeley dot edu)
OH:                 Tue 2-3 pm in 511 Sutardja Dai Hall
Lecture:         Tuesday and Thursday –12:30 to 2:00 pm @ 293 Cory

GSI:                Niciolas Andrade, nicolas_andrade at berkeley dot edu
OH:                 Mondays 4-5pm in 284 Cory Hall
Discussion:     Wednesday – 4:00 to 5:00 pm @ 228 Dwinelle

Textbook

  • L. Chuang, Physics of Photonic Devices, 2nd Edition, John Wiley and Sons, 2009

References

Course Objective

This course is designed to give an introduction and overview of the fundamentals of optoelectronic devices. Topics such as optical gain and absorption spectra, quantization effects, strained quantum wells, optical waveguiding and coupling, and hetero p-n junction will be covered. This course will focus on basic physics and design principles of semiconductor diode lasers, light emitting diodes, photodetectors and integrated optics. Practical applications of the devices will be also discussed.

Prerequisites

  • EE 130: p-n junction, semiconductor physics, concept of energy bands, Fermi levels.
  • PHYS 137A/B: (recommended) Basic concept of quantum mechanics, perturbation theory
  • EE 117: (recommended) Concept of dielectric waveguide, electromagnetic waves.

Grading:

Participation         10%
Homework            20%
Midterm                20%
Final Exam           25%
Final Project         25%

Homework

Homework will be assigned roughly every two weeks. It will be announced in class and posted on class website. Submission is through uploading in bCourses. Homework will be self-graded (spot check by GSI). Solution and rubric will be posted in bCourses. Discussion and collaboration are permitted, but you must write your own derivations and do your own calculations.

Exams

Both exams will be given in class. The midterm date will be announced later in class.
The Final exam will take place on the last day of class (Thursday, April 30th).

Final Project

The final project is intended as a comprehensive exercise of what you learned in this course. You will analyze an optoelectronic device of your choice, using the techniques and tools covered in this course. You will not need to invent a new device. You can analyze structures published in the literature and extend, elaborate, or improve upon the published result.

Deliverable:

  • 3-4 page paper (Due May 11th, Monday) in the format of a journal paper (Template for Optica). You will be the sole author of your paper. You can list others you have discussed with in the Acknowledgment section.
  • Lightening presentation (in RRR week) with 3 minutes presentation and 3 minute Q&A.

EECS Department Policy on Academic Dishonesty:  http://www.eecs.berkeley.edu/Policies/acad.dis.shtml

Tentative Schedule:

Week # Topics Reading
1 Course introduction;

Optical gain and laser cavities

 Chuang 1.1-1.4
2 Semiconductor physics,

Heterojunction devices

 Chuang 2.5

Miller 8.1-8.7
3 Quantum wells,

Fermi’s Golden Rule

 Chuang 3.1, 3.2, 3.6

Miller 7.1, 7.2, 8.8
4 Optical absorption in bulk semiconductors Chuang 9.1, 9.3
5  Optical matrix element, gain in bulk semiconductors Chuang 9.5.1
6 Absorption and gain in quantum well and quantum dots Chuang 9.4, 9.6.1
7 Optical waveguides, dispersion relations Chuang 7.1, 7.6
8 Quantum-well lasers

Strained quantum-well lasers

 Chuang 10.3, 10.4
9 Distributed feedback lasers (§8.6 and §10.6);

Vertical cavity surface-emitting lasers (VCSELs)

 Chuang 11.1, 11.2
10 Direct modulation of semiconductor lasers, rate equations Chuang 12.1, 12.2
11 Electroabsorption modulators

Franz-Keldysh effect and excitons

Quantum confined Stark effect

 Chuang 13.2-13.5
12 Photodetectors, p-i-n photodiodes Chuang 14.1-14.3
13 Avalanche photodiode (APD), detector noise, direct and coherent detection Chuang 15.4
14 Review, Final Exam