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Experimental demonstration of simultaneous mode and polarization-division multiplexing based on silicon densely
Optics Letters
|October 16, 2015
Summary
This study introduces a compact silicon device for multiplexing and demultiplexing optical modes and polarizations. The novel design achieves low insertion loss and crosstalk, paving the way for efficient optical communication.
Area of Science:
- Photonics
- Optical Communications
- Integrated Optics
Background:
- Mode and polarization-division multiplexing are crucial for increasing optical communication capacity.
- Existing devices often suffer from large size, high loss, or limited bandwidth.
Purpose of the Study:
- To introduce a novel silicon-based mode and polarization-division multiplexing scheme.
- To demonstrate a compact and efficient device for optical signal processing.
Main Methods:
- A densely packed waveguide array structured as a bus waveguide was designed.
- Short adiabatic tapers were employed for multiplexing and demultiplexing.
- Fabrication and experimental characterization of the device were performed.
Main Results:
- Theoretical insertion losses were <0.05 dB and crosstalk <-20 dB over a wide wavelength band for all five supported modes.
- Experimental results showed insertion losses <0.6 dB and crosstalk <-15 dB over an 80 nm band.
- The demonstrated device has a total length of 60 μm.
Conclusions:
- The proposed silicon scheme offers a compact and efficient solution for mode and polarization multiplexing.
- The device exhibits excellent performance metrics, suitable for advanced optical communication systems.
- This technology has the potential to significantly enhance data transmission rates.
