M-type refractive index profile erbium-doped fiber for high-efficiency multicore EDFA.
Opt Express
; 32(5): 7564-7573, 2024 Feb 26.
Article
in En
| MEDLINE
| ID: mdl-38439434
ABSTRACT
Cladding-pumped multicore erbium-doped fiber is an important element for future spatial division multiplexing (SDM) amplification. We propose an M-type erbium-doped multicore fiber to achieve high-efficiency SDM amplification. The performance of cladding-pumped erbium-doped fiber with a central refractive index depression has been investigated, and the M-type fiber has better amplification performance than conventional fibers by reducing the signal mode overlap with the doped region. The experiment results show that the M-type 4-core erbium-doped fiber has a gain improvement of 2.8â
dB compared with conventional 4-core fiber. The pump conversion efficiency (PCE) has been enhanced from 4.47% to 8.01%. For a 7.0 W pump power at 976â
nm, the M-type fiber exhibits an average gain of 20.0â
dB and an average noise fiber of 6.8â
dB at the L-band. The core-to-core gain variation is less than 1.6â
dB.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2024
Document type:
Article
Country of publication:
Estados Unidos