Fig. 1. TCAH-MC-FM-MOF structure. (a) Cross section of TCAH-MC-FM-MOF; (b) effective refractive index distribution of TCAH-MC-FM-MOF

Fig. 2. Cutoff conditions for LP₃₁ and LP₁₂ modes

Fig. 3. Relationship between ICXT and structural parameters of TCAH-MC-FM-MOF. (a) Relationship with K; (b) relationship with r₁; (c)relationship with d; (d)relationship with c

Fig. 4. Relationship between A_eff of 5-LP modes and structural parameters. (a) Relationship with r₂; (b) relationship with a; (c) relationship with b; (d) relationship with c

Fig. 5. DMGD versus wavelength

Fig. 6. Cross section diagrams of various FM-MCF structures. (a) Traditional step-type FM-MCF; (b)TA-FM-MCF; (c)AT-FM-MCF; (d) TCAH-MC-FM-MOF

Fig. 7. ICXT comparion of LP₃₁ mode for four fiber structures

Fig. 8. Effective refractive index of 5-LP modes

Fig. 9. Mode field maps of 5-LP mode. (a)--(e) LP₀₁, LP₁₁, LP₂₁, LP₀₂, LP₃₁

Fig. 10. Relationship between R_b and ICXT