Design and analysis of micro-mirror based tunable optical delay line.

摘要

Optical delay line module is an important building block for advanced communication systems such as OCDMA and OTDMA. The past decade has seen a large research and development activity in this area.;The result of simulations suggests using correction mirrors in order to decrease the optical power loss due to misalignment. It has been also concluded that improvement of pop-up micro-mirrors as a main source of misalignment, will alleviate the performance remarkably.;In this thesis, design and performance analysis of a tunable optical delay line which employs pop-up MEMS micro-mirrors have been described. The delay paths which their lengths are in binary fashion are free-space based delay lines. Micro-mirrors operate as a switch to redirect the light through delay paths. One of the main characteristic of this design is to provide constant optical power loss for different delay times. Computer simulations have been shown to evaluate the performance of the system to different sources of misalignments.