Patent ID: 11923651
Assignee: SUBCOM, LLC
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An apparatus comprising:
a C-band amplification section;
an L-band amplification section;
a first gain flattening filter (GFF) for performing C-band gain equalization, the first GFF coupled and arranged subsequent to the C-band amplification section;
a second GFF, different from the first GFF, for performing L-band gain equalization, the second GFF coupled and arranged subsequent to the L-band amplification section;
a first optical isolator arranged or coupled between the first EDF of the C-band amplification section and the first GFF; and
a second optical isolator arranged or coupled between the second EDF of the L-band amplification section and the second GFF;
wherein the C-band amplification section includes at least a first erbium doped fiber (EDF) for amplifying a C-band optical signal;
wherein the L-band amplification section includes at least a second EDF for amplifying an L-band optical signal;
wherein the C-band amplification section and the L-band amplification section are configured in a parallel arrangement; and
wherein at least the first and second optical isolators and the first and second GFFs form a hybrid component.