Title

Microphotonic Wideband Tapped Optical Delay Line FIR Filter Noise Analysis

Document Type

Journal Article

Publisher

John Wiley & Sons Inc

Faculty

Computing, Health and Science

School

Electron Science Research Institute

RAS ID

3592

Comments

This article was originally published as: Jeffery, R. , & Alameh, K. (2005). Microphotonic Wideband Tapped Optical Delay Line FIR Filter Noise Analysis. Microwave & Technology Letters, 45(6), 476-480. Original article available here

Abstract

MicroPhotonic broadband RF signal processors utilize true-time-delay methods to perform processing functions that cannot be achieved by conventional electronic methods. Using a tapped optical-delay line, a low-cost adaptive wideband FIR filter can be realized. We analyse the sources of noise for such a filter using commercially available VCSEL sources, PIN diodes, and transimpedance amplifiers. The power at each tap can be equal by using a suitably graded coating, or if the reflectivity is constant, there is an optimum reflectivity that maximizes the signal-to-noise ratio for a given number of taps, as we show in this paper.

 

Link to publisher version (DOI)

10.1002/mop.20857