Simplified Theory of the Multimode Fiber Coupler

Ogawa, Kohji

doi:10.1002/j.1538-7305.1977.tb00536.x

Cited by 44 publications

(23 citation statements)

References 5 publications

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“…In [29] agrees that the distance between the two fibers affects the coupling efficiency among other considered parameters. Although coupling length is important, however, the optimum efficiency of coupling not only depends on the optimum length but also on the distance between the two cores.…”

Section: Distance Of Coressupporting

confidence: 65%

Fabrication of Polymer Optical Fiber Splitter Using Lapping Technique

Supian¹,

Ab-Rahman²,

Arsad³

et al. 2018

Selected Topics on Optical Fiber Technologies and Applications

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This work involves in designing and developing a POF-based directional coupler/splitter using lapping technique and geometrical blocks. Two fiber strands were first tapered at the middle and they were attached to the geometrical blocks and lapped together. Design parameters that are used to develop this coupler/splitter are core diameter, D c , etching length, L e , bending radius, R c , coupling length, L c and pressure, F c . All the parameters were taken into account during characterization and analysis of the designed coupler in order to find the most optimum prototype coupler/splitter. Characterizations are done by experimental set-up to test the efficiency, splitting ratio, coupling ratio, excess loss and insertion loss for all the couplers/splitters. Through the characterization process and analysis, the optimized coupler with high splitting ratio and low excess loss were identified. Throughout the experimental process, some of the fibers were improved and renewed in order to realize the design and development of the coupler using this technique. The device can also be utilized as an optical tap and the applications of the device are not only limited in in-house network but also in automotive applications. By using a platform, several splitting ratio can be obtained by integrating different core-cladding thickness and bending radius in order to get the desired splitting ratio and excess loss.

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Section: Distance Of Coressupporting

confidence: 65%

Fabrication of Polymer Optical Fiber Splitter Using Lapping Technique

Supian¹,

Ab-Rahman²,

Arsad³

et al. 2018

Selected Topics on Optical Fiber Technologies and Applications

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“…In such arrangements, higher order modes may not necessarily have the highest coupling. In fact, the coupling in this case depends on the nature of the mode itself [18]. As an example, we consider two circular cores, each having a diameter of 60 μm in contact with each other.…”

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confidence: 99%

Large area single-mode parity–time-symmetric laser amplifiers

2012

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By exploiting recent developments associated with parity-time (PT) symmetry in optics, we here propose a new avenue in realizing single-mode large area laser amplifiers. This can be accomplished by utilizing the abrupt symmetry breaking transition that allows the fundamental mode to experience gain while keeping all the higher order modes neutral. Such PT-symmetric structures can be realized by judiciously coupling two multimode waveguides, one exhibiting gain while the other exhibits an equal amount of loss. Pertinent examples are provided for both semiconductor and fiber laser amplifiers.

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“…the entrance (13) after having (14) The light that has not left the fiber through the aircladding interface after having passed through the taper is…”

Section: A Coupling Of a Biconical Fiber Couplermentioning

confidence: 99%