Mode filtering in periodic waveguides by means of band gap engineering

Pérez‐Galacho, Diego; Morini, D. Marris; Moñux, Alejandro Ortega; Perez, J. G. Wanguemert; Vivien, Laurent

doi:10.1109/oic.2015.7115704

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other devices, such as the Mach-Zehnder interferometer (MZI) and MMI coupler, can also be implemented using subwavelength structures. An add/drop mode multiplexer was constructed based on an MZI with SWG waveguides in both arms ( Figure 10A) [47][48][49]. The principle of operation is as follows: the TE 0 and TE 1 modes are launched into the device through port 1 and split by the input MMI coupler.…”

Section: Subwavelength Structured Mode Handling Devicesmentioning

confidence: 99%

Subwavelength structured silicon waveguides and photonic devices

Sun

Zhang

et al. 2020

Nanophotonics

View full text Add to dashboard Cite

AbstractSubwavelength structures such as subwavelength gratings (SWGs) and subwavelength metamaterials are capable of tailoring the optical properties of materials and controlling the flow of light at the nanoscale. The effective indices of the subwavelength structured strip and slab waveguides can be changed in a wide range by choosing an appropriate duty cycle or a filling factor of silicon, which provides an effective method to manipulate the optical field and achieve effective index matching for functional devices. Recent advances in nanofabrication techniques have made it possible to implement subwavelength structures in silicon strip and slab waveguides. Here we review various approaches used to design subwavelength structures and achieve exotic optical responses and discuss how these structures can be used to realize high-performance silicon photonic devices. Both one-dimensional SWG devices and two-dimensional subwavelength metamaterial devices are covered in this review, including subwavelength structure–based polarization handling devices, mode manipulation devices, and building blocks for integrated optical interconnects. Perspectives on subwavelength structured silicon photonic devices are also discussed.

show abstract

Section: Subwavelength Structured Mode Handling Devicesmentioning

confidence: 99%

Subwavelength structured silicon waveguides and photonic devices

Sun

Zhang

et al. 2020

Nanophotonics

View full text Add to dashboard Cite

show abstract

“…Recently, a waveguide structure based on embedding a graphene film for spatial-mode-filtering applications has been proposed [9]. In other work, the ability of periodic subwavelength grating waveguides to use for mode filtering is investigated [10]. The utility of the plasma for filtering has been applied in other research.…”

Section: Introductionmentioning

confidence: 99%

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Sobhani

Sabouhi

Feili

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

Here a new scheme for mode filtering is proposed. Based on the ponderomotive force effect, propagation of the microwave dual-mode through a plasma-filled metallic rectangular waveguide is investigated. To excite the TE 20 mode in a rectangular waveguide, the existence of fundamental modes is unavoidable. To filter the destructive mode (TE 10), the waveguide is filled with a collisional plasma. Based on the coupling effect, the energy of this destructive TE 10 mode is transferred to the TE 20 mode. The proposed structure acts like a mode convertor. The TE 10 mode become more attenuated and instead the TE 20 mode is amplified. The plasma filled rectangular waveguide acts as a mode filtering tool.

show abstract

Mode filtering in periodic waveguides by means of band gap engineering

Abstract: In this work, we present and analyze the ability of periodic SubWavelength Grating waveguides to act as mode filters. Moreover, we exploit this ability to design a novel kind of Add/Drop Mode Division Multiplexer exhibiting an extinction ratio over 20dB in the whole C-Band.

Cited by 2 publications

References 7 publications

Subwavelength structured silicon waveguides and photonic devices

Subwavelength structured silicon waveguides and photonic devices

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Contact Info

Product

Resources

About