IEEE photonics technology letters, 2007-02, Vol.19 (4), p.224-226
2007
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Details
- Autor(en) / Beteiligte
- Titel
- Novel Stepped-Width Design Concept for Compact Multimode-Interference Couplers With Low Cross-Coupling Ratio
- Ist Teil von
- IEEE photonics technology letters, 2007-02, Vol.19 (4), p.224-226
- Ort / Verlag
- New York: IEEE
- Erscheinungsjahr
- 2007
- Quelle
- IEL
- Beschreibungen/Notizen
- We show through detailed simulations that the length of conventionally designed multimode-interference couplers for low (<50%) cross-coupling ratios can be shortened significantly by replacing a segment that is 3/2-times the coupling length by a minimum-width design. For the 15% cross-coupling device, this stepped-width design results in 32% length reduction. With additional incorporation of adiabatic tapering, the length reduction can increase to over 44%. Shortening of the device makes it possible to fabricate ring resonators with larger free spectral range, significantly increases the 1-dB bandwidth for the total transmittance, and also helps to reduce the radiative loss
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1041-1135eISSN: 1941-0174DOI: 10.1109/LPT.2006.890762Titel-ID: cdi_ieee_primary_4077076
- Format
- –
- Schlagworte
- Bandwidth, Couplers, Devices, Multimode-interference (MMI) coupler, Optical interferometry, Optical planar waveguides, Optical ring resonators, Optical waveguide components, Optical waveguides, photonic integrated circuit, planar waveguide, Planar waveguides, Propagation losses, Reduction, Segments, Simulation, Slabs, Spectra, Tapering, Transmittance