Wavelength multiplexing components - A review of single-mode devices and their applications

Winzer, G.

doi:10.1109/jlt.1984.1073655

Cited by 76 publications

(14 citation statements)

References 17 publications

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“…This will give a lower insertion loss and also better agreement between mea sured and theoretical values for the optimum bend radius. For a small number of wavelengths, insertion losses not dissimilar to that incurred by other methods [1]- [3], i.e., of a few decibels, are possible. Crosstalk isolation in ex cess of 40 dB can be achieved by using detectors with fi lters as windows to reject unwanted wavelengths.…”

Section: Discussionmentioning

confidence: 99%

“…With the trend towards ever increasing bit rates there is a requirement for wavelength multiplexing and demultiplexing methods which are com patible' with single-mode optical fiber links. Methods of wavelellgth demultiplexing which are currently available in single-mode systems employ either interference filters or gratings or directional couplers or a combination of these [1]- [3]. The implementation of these methods re quires access to the fiber end and in some cases a mi croOptic arrangement which can be both complex and ex pensive.…”

Section: Introductionmentioning

confidence: 99%

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Wavelength demultiplexing using bends in a single-mode optical fiber

Harris

Shrubshall

Castle

1988

J. Lightwave Technol.

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A new method of wavelength demultiplexing is identified which makes use of the wavelength and bend radius dependence of the pure bend loss at single radius bends in a single-mode fi ber. The light leaving the fiber at a bend forms one output of the demultiplexer.Equations are derived which predict the bend radii for the most effi cient operation of the demultiplexer and the power extracted from the fiber at each wavelength. Tbe demultiplexer operates over the wave length range corresponding to V numbers from 2.4 to 1.6. A two waVe length demultiplexer formed from 90° bends is constructed and tested. Collection eftlelencies of 70 percent and insertion losses of less than 2 dB are sbown to be possible. Crosstalk isolation in excess of 40 dB can be achieved with tbe aid of optical wavelength filters. The performance of a th�ee wavelength demultiple�er 'is also considered.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wavelength demultiplexing using bends in a single-mode optical fiber

Harris

Shrubshall

Castle

1988

J. Lightwave Technol.

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“…Wavelength-division multiplexing has been evaluated experimentally for use in fiber communications systems for many years [8]. The technique provides increased channel capacity in communications systems.…”

Section: Fig 3 Measured Spectrum Of Used Fbgmentioning

confidence: 99%

Cost effective FBG based optical sensor

Komljenović

Bosiljevac

Šipuš

2007

2007 19th International Conference on Applied Electromagnetics and Communications

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Cost Effective FBG Based Optical SensorUDK 681.586.5 IFAC 4.2.2Original scientific paperFiber Bragg Grating (FBG) based sensors constitute majority of optical sensors for measuring physical values such as strain, temperature, or both. While properties of FBG alone are well known, interrogation techniques have not been standardized. Most sensors use expensive equipment, such as optical spectrum analyzers, for measuring Bragg wavelength changes as a result of strain, or temperature change. Such method is reliable and gives good results, but cannot be used if we are to construct a cost effective sensor whose use could be widespread. In this paper we demonstrate an alternative way of measuring Bragg wavelength shift that could allow us to build cheap, reliable sensor. Furthermore, the proposed sensor can be thermally stabilized without additional resources. Sensor can, finally, be multiplexed offering quasi-distributed monitoring of smart structures while further reducing the cost.

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“…Processes and Procedures: Directional couplers: In the late 1970's, three techniques were successfully demonstrated to fabricate fiber optic directional couplers: fusing-tapering [49]- [51], etching [52], and polishing [53]- [56]. To date, the fused-tapered fiber coupler has received the most commercial attention.…”

Section: Furcationmentioning

confidence: 99%

Passive components in the subscriber loop

Keck

Morrow

Nolan

et al. 1989

J. Lightwave Technol.

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Excellent progress has been made over the past few years in the area of passive components for optical fiber subscriber loop systems. The key functional requirements of interconnection, furcation, and filtration currently are being met by discrete components that can be manufactured in sufficient volume to carry forward the trials currently in progress or being planned. Depending on system architecture, the cost and ease of use of these components can play a pivotal role in allowing fiber deployment in the distribution loop to proceed. Ultimately, discrete components will he displaced by more highly integrated components and finally by fully integrated optoelectronics over the next several decades.

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Wavelength multiplexing components - A review of single-mode devices and their applications

Cited by 76 publications

References 17 publications

Wavelength demultiplexing using bends in a single-mode optical fiber

Wavelength demultiplexing using bends in a single-mode optical fiber

Cost effective FBG based optical sensor

Passive components in the subscriber loop

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