2D coupling configurations in integrated optical structures

Wageeh, Amr; El-Sabban, Salwa; Khalil, Diaa

doi:10.1016/j.ijleo.2023.170649

Cited by 2 publications

(3 citation statements)

References 31 publications

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“…In addition, we note that the coupling length has also the tendency to increase as the Y shift is reduced. This is expected as for a Y shift = 0, we get two modes one with even symmetry and the other with odd symmetry with respect to the Y axis and thus from the CMT, the coupling length at that point should again tend to infinity as expected in Wageeh et al (2023).…”

Section: Mac Coupler Designmentioning

confidence: 55%

“…In weakly guiding structures, these two guides are expected to have the same polarizations and effective refractive indices for their two first order modes and hence a 100% power coupling is expected within a short coupling length. The analysis of such 2D coupling problem has been presented in reference (Wageeh et al 2023). The advantage of such structure is its easy fabrication using the multilevel integrated optics technology.…”

Section: Design Conceptmentioning

confidence: 99%

“…com). The multilevel structure allows the fabrication of asymmetric directional coupler that can be used for mode division multiplexing (Wageeh et al 2023;Elsabban and Khalil 2023). In this work, we present a nouvelle design for a field rotator using the multilevel PLC technology.…”

Section: Introductionmentioning

confidence: 99%

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Multilevel asymmetric coupler MAC field rotator for LP11 mode in few mode fiber

El-Sabban,

Khalil

2023

Opt Quant Electron

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In this work, we present a new design for an integrated optical field rotator for the mode LP11a to the mode LP11b and vice versa using planar Silica over silicon technology. The structure is designed using a Multilayer Asymmetric Coupler. The coupling efficiency of the coupler could be as high as 99% when its length is about 1 mm. For a shorter coupler of length 550 microns and a coupling efficiency of 91%, a complete structure is designed to couple 2 few mode fibers of diameters 15.4 microns through an inverted taper from one side and a Y junction with two inverted tapers from the other side. The fiber to fiber insertion loss of the proposed structure is less than 3 dB over about 190 nm spectral range around 1550 nm. The 3 dB bandwidth of the structure is greater than 360 nm as demonstrated by the Beam Propagation Method BPM simulation.

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Section: Mac Coupler Designmentioning

confidence: 55%

Section: Design Conceptmentioning

confidence: 99%