A novel interleaver based on dual‐pass Mach‐Zehnder interferometer

Abstract

A novel interleaver based on a dual-pass Mach-Zehnder (M-Z) interferometer is proposed and analyzed by both theory and experiment. Compared with the traditional M-Z interferometer, the isolation of the new structure is enhanced greatly. When the frequency spacing reaches 50 GHz, its isolation is more than 25 dB.ABSTRACT: A novel LTCC power combiner, which is adopted from conventional balun design, is presented. In contrast to the conventional balun network, our design provides one pair of nondifferential signals with minimum phase difference between the outputs. Experimental results are given in the paper to verify our theoretical analysis and design.

A new magnetic sensor with Mach-Zehnder/Sagnac optical fiber interferometer

“…However, the optical fiber Sagnac interferometer structure is with disadvantage of the Rayleigh backscatter and polarization wander. Then, the Mach-Zehnder/Sagnac interferometer (MZ-SI) has been proposed for filter [6] and precision sensing [7,8].…”

Interleavers

“…In addition to the fixed path length differences ∆L j generating the frequency-periodic response, in general also tuneable phase-shifters ∆ϕ k are implemented in each MZI-section for fine-tuning purposes. Several design methods have been discussed in the literature, e. g. [2,[6][7][8][9][10][11][12][13][14]. This type of interleaver is analysed in detail in Sect.…”