Coherence multiplexing using a parallel array of electrooptic modulators and multimode semiconductor lasers

Journal Article · Tue Dec 01 04:00:00 EST 1987 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1987.1073295· OSTI ID:5646332

Goedgebuer, J P; Hamel, A

The paper presents a rather new approach of electrooptic modulation of light suitable for coherence multiplexing N transmission channels. A parallel array of N electrooptic multiplexers powered by multimode semiconductor lasers is used for imprinting the signals on light simultaneously. It is shown that the electrooptic multiplexers have to generate optical time delays whose optimal values are ruled by the sequence 1/2N . deltaf, 1/N . deltaf, 3/2N . deltaf, etc. where deltaf is the intermodal separation of the laser longitudinal modes. The performance of the system is discussed in terms of crosstalk, number of possible channels, and signal power. The demonstration of the method is reported in the area of optical communications with the transmission of base-band video signals.

• Research Organization: Optics Lab., Faculte des Sciences, Univ. of Besancon, 25030 Besancon Cedex
• OSTI ID: 5646332
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-23:12; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
DATA TRANSMISSION SYSTEMS
ELECTRO-OPTICAL EFFECTS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
LASERS
LIGHT TRANSMISSION
MODULATION
MULTIPLEXERS
OPERATION
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
TIMING PROPERTIES
VISIBLE RADIATION