Journal ArticleDOI
Electrooptic modulation of multilongitudinal mode laser diodes: Demonstration at 850 nm with simultaneous data transmission by coherence multiplexing
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In this article, an electrooptic modulation method based on signal coding through optical delays larger than the source coherence length is described, illustrated with the simultaneous transmission of several signals by path-difference multiplexing.Abstract:
An electrooptic modulation method based on signal coding through optical delays larger than the source coherence length is described. The method is illustrated with the simultaneous transmission of several signals by path-difference multiplexing. In this method, the signals are coded as a sequence of optical delays introduced by a series of electrooptic modulators working as delay lines. Decoding is carried out by temporal correlation performed by another sequence of optical delays introduced by birefringent plates, and matched to those used at the emission process. The permissible delays are shown to be ruled by the source coherence length and by the number of laser modes.read more
Citations
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Journal ArticleDOI
Coherence coding for photonic code-division multiple access networks
TL;DR: Key features of this code-division multiple access technique are intrinsic security, operation of the receiver at only the bit rate of a single channel, and reconfiguration without switching optical delays, which are considerable advantages compared to previously proposed CDMA schemes.
Journal ArticleDOI
Theoretical noise performance of coherence-multiplexed interferometric sensors
TL;DR: In this paper, the authors consider fiber-optic interferometric sensors with a short coherence length and find that the minimum detectable phase is limited by the noise associated with incoherent interference.
Journal ArticleDOI
Photonic code-division multiple-access communications
TL;DR: In this paper, the fundamental principles of matched filtering and noise in photonic CDMA schemes are described and a survey of important developments and how various schemes are related is presented. But, although there are many published proposals for new coding schemes, there are few experimental verifications of these schemes, even fewer reports of successful data transmission, and no commercial systems.
Journal ArticleDOI
Imbalanced Mach-Zehnder interferometer integrated in micromachined silicon substrate for pressure sensor
TL;DR: In this paper, an interferometric pressure sensor designed to work as a remote sensor in a coherence modulation scheme, allowing a linear phase read-out of the signal is described.
Journal ArticleDOI
Coherence multiplexing using a parallel array of electrooptic modulators and multimode semiconductor lasers
J.-P. Goedgebuer,A. Hamel +1 more
TL;DR: In this article, a new approach of electrooptic modulation of light suitable for coherence multiplexing N transmission channels is presented, where a parallel array of N EMDs powered by multimode semiconductor lasers is used for imprinting the signals on light simultaneously.
References
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Journal ArticleDOI
Coherence multiplexing of fiber-optic interferometric sensors
Janet L. Brooks,Robert H Wentworth,Robert C. Youngquist,Moshe Tur,Byoung Yoon Kim,Herbert J. Shaw +5 more
TL;DR: In this paper, a method of multiplexing several optical signals onto a single spatial channel using a short coherence length continuous wave light source is described, and some design considerations are discussed Experimental results for a single sensor and receiver are presented and compared with theoretical predictions.
Proceedings ArticleDOI
High-Accuracy Position-Sensing With Fiber-Coupled White-Light Interferometers
Th . Bosselmann,R. Ulrich +1 more
TL;DR: In this paper, the mirror position of the transmitting interferometer is reconstructed in the receiving interferometers by periodically scanning through three 'white-liciiit' fringes (laser reference, 6 mm range, 0.1 μpm resolution).
Journal ArticleDOI
Application de la modulation spectrale à la transmission de l'information
Claude Delisle,Paolo Cielo +1 more
TL;DR: In this article, it was shown that a system of communication based on the modulation of the spectrum of a light source is feasible, theoretically as well as experimentally, using a white light source.
Journal ArticleDOI
Multiplexage en communication optique par interféromètrie à grande différence de marche en lumière blanche
P. Cielo,C. Delisle +1 more
TL;DR: In this paper, a multiplex communication system based on the variation of the fringe interval in the channelled spectrum from a broad band source is presented, which allows a simultaneous transmitting and receiving of several messages.
Journal ArticleDOI
Multiplex Communication Via Electro-optic Phase Modulation of White Light
TL;DR: In this paper, the path differences between wave-groups of white light are introduced at the emission stage by using a set of birefringent quartz plates and transverse electro-optic modulators acting as delay lines.
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