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Fundamental-mode cutoff in depressed cladding multiple-fibre couplers

Fundamental-mode cutoff in depressed cladding multiple-fibre couplers

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© The Institution of Electrical Engineers
Published

The fundamental mode of a multiple-fibre coupler, consisting of an arbitrary number of identical parallel fibres, has exactly the same cutoff wavelength as one of the fibres in isolation from the others and is independent of the separation of the fibres. For a single-mode coupler composed of two depressed inner-cladding fibres, both the fundamental and second modes have finite cutoff wavelengths provided the fundamental mode of each fibre is cut off.

Inspec keywords: optical couplers; optical fibres; optical waveguide theory

Other keywords: optical connectors; optical fibres; second modes; crosstalk; single mode fibres; optical couplers; cutoff wavelength; depressed cladding multiple-fibre couplers; fundamental mode; two depressed inner-cladding fibres; single-mode coupler; arbitrary number of identical parallel fibres

Subjects: Optical waveguides and couplers; Fibre optics

References

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      • M. Monerie . Propagation in doubly clad single mode fibers. IEEE J. Quantum Electron. , 535 - 542
    2. 2)
      • A.W. Snyder , J.D. Love . (1983) , Optical waveguide theory.
    3. 3)
      • B. Simon . The bound state of weakly coupled Scheödinger operators in one and two dimensions. Ann. Phys. , 279 - 288
    4. 4)
      • J.D. Love , A. Ankiewicz . Cutoff in single-mode optical fibre couplers. Electron. Lett. , 362 - 363
    5. 5)
      • J.D. Love , A. Ankiewicz . Modal cutoffs in single- and multimode fiber couplers. IEEE J. Lightwave Technol.
    6. 6)
      • C.D. Hussey , C. Pask . Theory of the profile-moments description of single-mode fibres. IEE Proc. H, Microwave, Opt. & Antennas , 123 - 134
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