Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Rodney T. Unwin"'
Publikováno v:
European Transactions on Telecommunications. 3:331-340
Digital pulse position modulation (PPM) is a preferred modulation format for the ideal photon counting channel and optical intersateilite links. Here we examine its potential for the coherent optical fibre communications channel. We present a thoroug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e03d52428438b81defd8ac8fe46d99e8
https://doi.org/10.1002/ett.4460030405
https://doi.org/10.1002/ett.4460030405
Publikováno v:
IEE Colloquium on Optical Free Space Communication Links.
In this paper we discuss the design of an optical telepoint receiver. The level of receiver performance required when optical baseband video signals are recovered is discussed and a suitable receiver topology is presented. Theoretical and measured re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9ef80008abc46183f08f00e578281d7
https://doi.org/10.1049/ic:19960191
https://doi.org/10.1049/ic:19960191
Publikováno v:
SPIE Proceedings.
Optical wireless is a relatively new field, its development encouraged by the ever growing popularity of mobile computing and communications equipment. We present practical results for a 10 MB/s diffused optical wireless Ethernet system which allows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e72f9fa2a6c0b699a5a32b9cb43c92be
https://doi.org/10.1117/12.228153
https://doi.org/10.1117/12.228153
Publikováno v:
SPIE Proceedings.
In this paper we discuss the design of an optical telepoint receiver. The level of receiver performance required when optical baseband video signals are to be recovered is discussed and a suitable receiver topology is presented. Theoretical and measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::688bc3b388e5628215407154589c8d92
https://doi.org/10.1117/12.228151
https://doi.org/10.1117/12.228151
Autor:
Rodney T. Unwin, S. D. Greaves
Publikováno v:
SPIE Proceedings.
In this paper we investigate the design and realisation of broadband tee-tuned front-end optical receivers. The receivers will be implemented as a GaAs MMIC using the GEClMarconi F20 foundry, the activedevices are O.5pm gate-length GaAs MESFETs. Simp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fdbfb0d5aa39a018000ec579516ae9a
https://doi.org/10.1117/12.227827
https://doi.org/10.1117/12.227827
Autor:
Rodney T. Unwin, P. J. Nicholls
Publikováno v:
SPIE Proceedings.
In this paper we consider the design of broadband optical receivers for use in free-space local area networks. After a brief introduction to the relatively new topic of optical wireless LAN's, our attention turns to the design of receivers for use in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02a6478d7e9759806eda74bb14351552
https://doi.org/10.1117/12.201309
https://doi.org/10.1117/12.201309
Autor:
Rodney T. Unwin, S. D. Greaves
Publikováno v:
SPIE Proceedings.
Recently much interest has been shown in the design of very low noise tuned front-end optical receivers for use in Lightwave Sub-carrier Multiplex Systems as well as Coherent Lightwave Systems. This paper looks at the requirements that need to be con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38eb5818a16d18cc389bca8fbaf152d9
https://doi.org/10.1117/12.201308
https://doi.org/10.1117/12.201308
Publikováno v:
Analogue Optical Fibre Communications ISBN: 9780852968321
A performance analysis has been presented for digital PPM transmitted over an optical fibre channel and detected using both optimum and sub-optimum pre-detection filters. Receiver sensitivity calculations, carried out at a bit-rate of 140Mbit/s and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47a179a017c8303d7a5aa8e883dfd296
https://doi.org/10.1049/pbte032e_ch6
https://doi.org/10.1049/pbte032e_ch6
Autor:
Rodney T. Unwin, S. D. Greaves
Publikováno v:
SPIE Proceedings.
Tuned front-end optical receivers, for use in Coherent or Subcarrier Multiplex Lightwave systems, offer significant improvements in signal to noise performance over conventional baseband receivers. To design these receivers correctly a detailed knowl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c867abe800e06f275258b1746d177ee4
https://doi.org/10.1117/12.161340
https://doi.org/10.1117/12.161340
Autor:
Robert A. Cryan, Rodney T. Unwin
Publikováno v:
SPIE Proceedings.
In n-ary PPM, a single high energy pulse is used to convey M bits of information. In this paper we propose that advantage be taken of the fiber non-linearity such that the n-ary PPM pulse becomes a temporal soliton. We examine the maximum achievable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c070a6db8f10b78ae660e60fb0192624
https://doi.org/10.1117/12.139320
https://doi.org/10.1117/12.139320