NDLI: Low cost transmitter and receiver for a short-range optical wireless communications and their year evaluation results

Content Provider	IEEE Xplore Digital Library
Author	Kanghyuk Kwon Kyunam Cho Kyuseob Cho Hyeongjun Huh Heesong Jeong Heesoo Kim
Copyright Year	2005
Description	Author affiliation: Dept. of Phys., Sogang Univ., Seoul, South Korea (Kanghyuk Kwon; Kyunam Cho)
Abstract	There have been continuing efforts for using the optical wireless (OWL) or free-space communication as an effective way of connecting subscribers to a fiber backbone. Poor link availability in a hostile weather environment is still an issue for OWL link. Various schemes including the use of RF backup link to improve the availability have been proposed. This paper presents a designed low cost, short-range OWL transmitter (Tx) and receiver (Rx). Standard packaging techniques were used for mounting optical components and communication devices to cut down the manufacturing cost. The aperture size of the Tx and Rx was /spl sim/5 cm. The beam divergence, wavelength, and calculated link margin for 120 m are 2 mrad, 3 dB and 1310 nm, respectively. Details of evaluation results in bad weather conditions including a record snow fall, record fog, and cloud burst rains are presented.
Starting Page	35
Ending Page	36
File Size	219831
Page Count	2
File Format	PDF
ISBN	0780389816
ISSN	10994742
DOI	10.1109/LEOSST.2005.1527980
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical transmitters Optical receivers Costs Wireless communication OWL Joining processes Optical fiber communication Spine Radio frequency Communication standards
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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