Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 40, Issue 1, Pages 143-148Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2021.3118379
Keywords
Dispersion; Sagnac interferometers; Passband; IIR filters; Finite impulse response filters; Propagation losses; Fabry-Perot; Fabry-perot cavity; interleaver; michelson interferometer; sagnac loop reflectors
Funding
- National Key R&D Program of China [2018YFC150370-3]
- Shanghai Academy of Spaceflight Technology [SAST2019-127]
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This study presents the design and experimental demonstration of a 3rd-order reflective hybrid interleaver based on Fabry-Perot cavity assisted Michelson interferometer. The performance of the interleaver is influenced by loss and transmission coefficient, and its flatness and rectangularity increase with the order.
We present the design and experimental demonstration of a 3rd-order-reflective hybrid interleaver based on Fabry-Perot (FP) cavity assisted Michelson interferometer (FPA-MI), in which the FP cavity consists of two cascade Sagnac loop reflectors (SLRs). Through comparison, it can be seen that the flatness and rectangularity of interleaver are increased with the increase of order. When the transmission coefficient of the variable SLR is 0.1975 or 0.98, the performance of the interleaver is the best under the lossless condition. The influence of loss and transmission coefficient on the flatness of the interleaver can be evaluated by the dispersion model when the loss is considered, and when the dispersion range is 0.911, the flatness of the interleaver is the best. The reflective FPA-MI interleaver, due to its superior performance, will provide a more promising application in dense wavelength division multiplexing optical communication systems.
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