Lecture 8 - Photonic crystal fibers

Lecture 8 - Photonic crystal fibers - Photonic crystal...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Photonic crystal fibers P. Russell, Science, 299, 358, 2003 “Photonic crystal fibers guide light by corralling it within a periodic array of microscopic air holes that run along the entire fiber length….”
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Stack and Draw Technique Macroscopic “preform” with the required periodicity Photonic crystal fiber Furnace to soften the silica gas
Background image of page 2
A brief overview of conventional fiber structure Silica cladding: n 1 = 1.44 to 1.46 Silica core doped with Germanium, Boron or Titantium n 2 - n 1 n 2 = 0.001 ~ 0.02 Core diameter for single mode fiber about 8 μ m.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Propagation loss in conventional optical fiber OH Peak Rayleigh scattering: from random localized variation of the molecular positions in glass which creates random inhomogeneities in index. Infrared absorption: from vibrational transitions. Absolute minimum at 1.55 micron, at 0.16dB/km, about 3.6% per km. Saleh and Teich, Fundamentals of Photonics, 1991
Background image of page 4
fiber optical amplifier for long distance communication Er, gain maximum close to 1.55 micron Usable bandwidth limited by the amplifier bandwidth to be approximately 30nm Improving bandwidth by removing amplifiers, guiding in air?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/10/2011 for the course ECE 695s taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

Page1 / 17

Lecture 8 - Photonic crystal fibers - Photonic crystal...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online