LP01 to LP0m mode converters using all-fiber two-stage tapers

Design optimisation of a waveguide‐based LP 01 –LP 0m mode converter by using artificial intelligence technique

“…Also, the comparative study shows that there are significant improvements in the IL. For example, the obtained LP 01 -LP 02 mode converter provides an improvement of more than 50% in IL compared with the one presented in [16]. All dimension parameters are in the unit of µm.…”

Conical Double-Core Structure LPmn Mode Converter

“…As can be seen from Table 2, all the mode converters/multiplexers have more than 80% conversion efficiency. The mode converters/multiplexers proposed in [5], [16] and [22] have two or more mode conversions, but are limited by narrow bandwidth. The mode converter proposed in [20] has a wide bandwidth (350 nm), but only one mode conversion is obtained.…”

“…By change of the radius of the length of the fiber core to form a tapered core structure, the mode coupling is introduced, and the mode conversion can be realized. Mode converters using two-stage tapered fiber cores were reported in 2015 [16]- [19]. The first-stage tapered core introduces mode coupling to excite some higher-order modes, and then the embedded second-stage tapered core is used to enhance mode coupling of the targeted mode.…”