Optical domain demultiplexing of subcarrier multiplexed cellular and wireless LAN radio signals

Xavier Fernando; Hatice Kosek; Yifeng He; Xijia Gu

doi:10.1117/12.628125

3 October 2005 Optical domain demultiplexing of subcarrier multiplexed cellular and wireless LAN radio signals

Xavier Fernando, Hatice Kosek, Yifeng He, Xijia Gu

Proceedings Volume 5971, Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics; 59711S (2005) https://doi.org/10.1117/12.628125
Event: Photonics North, 2005, Toronto, Canada

Abstract

Subcarrier multiplexed transmission of cellular (900 MHz), personal communications systems (1.8 GHz) and wireless LAN (2.4 GHz) over the fiber has interesting applications. These multi channel radio over fiber links can connect enhanced wireless hot-spots that will support high speed wireless LAN services or low speed cellular services to different customers from the same antenna. Optical pre-filtering of SCM signals allows the use of inexpensive photodetector and increases network flexibility with fiber based optical filters. However, realizing optical demultiplexing at such low frequencies necessitates optical filters with high selectivity and low insertion loss. In this paper, we implemented a fiber wireless access system, where demultiplexing of subcarrier multiplexed cellular and WLAN signals was demonstrated in optical domain using a sub-picometer bandpass filter. Our novel fiber Bragg grating based bandpass filter has a bandwidth of 120 MHz at -3dB, 360 MHz at -10 dB and 1.5 GHz at -20 dB respectively. We experimentally verified that this filter could adequately isolate signals at as low as 900 MHz from 2.4 GHz. Experimental results show that the designed all optical demultiplexer provides about 25 dB isolation between 900 MHz and 2.4 GHz radio signals.

Citation Download Citation

Xavier Fernando, Hatice Kosek, Yifeng He, and Xijia Gu "Optical domain demultiplexing of subcarrier multiplexed cellular and wireless LAN radio signals", Proc. SPIE 5971, Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics, 59711S (3 October 2005); https://doi.org/10.1117/12.628125

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