Different cascaded fiber structures such as single-multi-single (SMS) mode, multi-single-multi (MSM) etc. have unique spectral features due to the multimode interference (MMI) phenomena. The transmission spectrum depends on the sensing fiber length i.e., SMF and MMF for MSM and SMS, respectively at the time of fabrication (ignoring the effect of external perturbations).
How does the group dispersion phenomenon affect these spectral features?
The spectrum of one of such cascaded fiber structures (here MSM) has been attached for the reference that occurs due to the MMI phenomena.
#fiber #SMS #MSM #Groupdispersion #opticalfiber
We present a single-mode–multimode–multimode (SMm) fiber structure with a few interesting device applications. Unlike the single-mode–multimode–single-mode (SMS) structure, SMm has the unique feature of more than one mode in the output fiber. A detailed physical understanding of the transmission properties, and the differences from the SMS structure, is presented. The device can be used to excite selected modes in the output multimode fiber (MMF). This can be used to reduce the number of modes in high-speed MMF applications using an all-fiber structure instead of bulk optics. In yet another possible application, we show a way of designing sensitive refractive index sensors for measurement in different RI ranges.
This publication could help you : Multimode interference devices with single-mode–multimode–multimode fiber structure
Article Multimode interference devices with single-mode–multimode–mu...
Thank you so much Jawher Makhlouf for sharing the article. I will go through it.
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