Some significant communications processing realized with adaptive Bragg gratings

Eric L. Upton; Michael G. Wickham; Martin Smith; James Hart; Robert Flynn; Steven A. Havstad; Paul Nachman

doi:10.1117/12.325721

2 October 1998 Some significant communications processing realized with adaptive Bragg gratings

Eric L. Upton, Michael G. Wickham, Martin Smith, James Hart, Robert Flynn, Steven A. Havstad, Paul Nachman

Proceedings Volume 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII; (1998) https://doi.org/10.1117/12.325721
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Higher data capacity demands and lower interference requirements in the wireless communications arena are exploiting higher carrier frequencies and wider modulation bandwidths. Circuitry which can perform intermediate frequency processing over these more demanding ranges is needed to provide complex signal processing without commercial penalties. Photonics technologies utilizing Bragg Grating Signal Processing (BGSP) can bridge the gap between the very high frequency RF millimeter wave integrated circuit domains at the antenna interface and the CMOS digital signal processor sat the base band frequency interface. The desirable benefits of multiple; tap adaptive finite impulse response (FIR) and infinite impulse response filters and equalizers are well known; however, they are usually the province of digital signal processing and force the sample rates prior to these processors to a higher overall system power consumption level. BGSP provides these functions with discrete taps and digital controls but at the bandwidths usually reserved for RF circuitry because the actual processing occurs at optical frequencies and at wave lengths which are compatible with integrated circuit technologies. The high performance benefits of photonic processing can be realized if the stability control of the Bragg grating is derived from the same metric which induces in photonics its sensitivity to drift. We will present a orthogonally coded tap modulation technique which stabilizes the transfer function of the signal processor and enables significant adaptive IF signal processing to be obtained with very low size, weight, and power. Our demonstration of a photonic proof-of-concept architecture is a reconfigurable multiple tap FIR filter that is dynamically controlled to perform low pass, high pass, band pass, and band stop filters operating over bandwidths of 3 GHz.

Citation Download Citation

Eric L. Upton, Michael G. Wickham, Martin Smith, James Hart, Robert Flynn, Steven A. Havstad, and Paul Nachman "Some significant communications processing realized with adaptive Bragg gratings", Proc. SPIE 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, (2 October 1998); https://doi.org/10.1117/12.325721

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
11 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Signal processing

Fiber Bragg gratings

Filtering (signal processing)

Control systems

Linear filtering

Digital signal processing

Optical filters

Show All Keywords

Keywords/Phrases

Search In:

Publication Years