Universal Michelson Gires-Tournois interferometer optical interleaver based on digital signal processing

Area of Science:

• Photonics and Optical Engineering
• Telecommunications Technology
• Digital Signal Processing

Background:

• Optical interleavers are crucial components in dense wavelength-division multiplexing (DWDM) systems.
• Existing designs often lack flexibility in achieving desired frequency response characteristics.
• Michelson Gires-Tournois interferometers (MGTI) offer a basis for optical interleaver development.

Purpose of the Study:

• To introduce a universal MGTI optical interleaver (UMGTIOI) with enhanced flexibility.
• To propose a novel and simple digital signal processing (DSP) method for UMGTIOI design.
• To demonstrate the capability of designing interleavers with arbitrary periodic frequency responses and duty cycles.

Main Methods:

• Development of a universal MGTI optical interleaver (UMGTIOI) concept.
• Utilization of digital signal processing (DSP) for the design methodology.
• Design of cascaded reflectors to achieve symmetrical or asymmetrical periodic frequency responses.

Main Results:

• Successful design of UMGTIOI with arbitrary duty cycles and response types.
• Demonstration of enhanced flexibility and applicability in optical networks.
• Validation of the DSP-based design method through various examples.

Conclusions:

• The proposed DSP method provides a simple and effective way to design UMGTIOI.
• UMGTIOI significantly enhances the flexibility and applicability of optical networks.
• The design approach allows for precise control over spectral characteristics for tailored network solutions.