STEP 1
STEP 2
STEP 3
STEP 4
Initial Installation
Grow C-band traffic
Expand to L-band
Grow L-band traffic
Double fiber capacity with simple, hitless L-band expansion.
No additional planning/engineering required for L-band.
No amplifier site visits required.
No impact to existing in-service C-band traffic.
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•
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Initial Installation
Grow C-band traffic
Expand to L-band
Grow L-band traffic
ROADM Site
Bi-directional
Amplifier Site
Bi-directional
Amplifier Site
Bi-directional
Amplifier Site
ROADM Site
ASE
ASE
C&L-band RLA
C-band
Add/drop
Transponder
C&L-band Amplifier
C&L-
band Raman
C&L-band Amplifier
C&L-
band Raman
C&L-
band Raman
C&L-
band Raman
C&L-band Amplifier
ASE
C-band
Add/drop
Transponder
C&L-band RLA
ASE
View of Optical Spectrum
Channelized L-band ASE replaces bulk ASE, and new L-band wavelengths are added with no impact to the system.
Channelized ASE
L-band
Add/drop
ASE
L-band ROADM
upgrade
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Integrated C&L-band amplifiers are installed at all in-line amplifier sites, so the line system is ready for L-band from day one.
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Built-in ASE noise loading ensures stable, optimal performance from day-one until the system is fully-filled.
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L-band ROADM and add/drop can be deferred to lower initial costs.
Channelized ASE
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Grow C-band capacity by simply adding more wavelengths.
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RLS substitutes signal power for ASE during channel addition with no impact to existing in service traffic.
Channelized ASE
New C-band wavelengths replace channelized ASE as they are lit.
L-band ROADM
upgrade
ASE
L-band
Add/drop
New L-band wavelengths replace channelized ASE as they are lit.
•
RLS substitutes signal power for ASE during channel addition with no impact to existing in service traffic.
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Adding more wavelengths to the L-band is just as easy as adding traffic to the C-band.
C-band Wavelengths
L-band Wavelengths
ROADM Site
RLA
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Includes C-band 1x32 WSS, Optical Channel Monitor, amplifiers, OTDR, OSC, channelized C-band and bulk
L-band ASE sources
RLA: C&L-band ROADM with Line amp
C-band CCMD: CCMD8x24
C-band Colorless, Directionless, and Contentionless mux/demux
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Transponder:
Product view
Product view
Bi-directional Amplifier Site
DLA: C&L-band Amplifier
Switchable gain C-band and L-band EDFAs
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SRA: C&L-band Single line Raman Amplifier
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Includes OTDR and OSC
Product view
Product view
ROADM Site
Product view
Product view
Product view
ROADM Site
RLA: C&L-band ROADM with Line amp
Includes C-band 1x32 WSS, Optical Channel Monitor, amplifiers, OTDR, OSC, channelized C-band and bulk
L-band ASE sources
•
C-band CCMD: CCMD8x24
C-band Colorless, Directionless, and Contentionless mux/demux
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Transponder:
LRU: L-band ROADM Upgrade
Includes L-band 1x32 WSS, Optical Channel Monitor, L-band amplifier, and channelized L-band ASE source
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L-band CCMD: CCMD8x24
L-band Colorless, Directionless, and Contentionless mux/demux
•
Product view
Product view
Power
Bulk ASE
C-band
wavelengths
STEP 1
STEP 2
STEP 3
STEP 4
Initial Installation
Grow C-band traffic
Expand to L-band
Grow L-band traffic
L-band λ
C-band wavelengths
Channelized ASE
L-band
wavelengths
Product view
C-band CCMD
Transponder
RLA
C-band CCMD
Transponder
LRU
L-band CCMD
Transponder
DLA
SRA
L-band
Add/drop
L-band ROADM
upgrade
ASE
L-band ROADM
upgrade
ASE
L-band
Add/drop
Transponder generates C-band wavelengths
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RLA
C-band CCMD
Transponder
RLA: C&L-band ROADM with Line amp
Includes C-band 1x32 WSS, Optical Channel Monitor, amplifiers, OTDR, OSC, channelized C-band and bulk
L-band ASE sources
•
C-band CCMD: CCMD8x24
C-band Colorless, Directionless, and Contentionless mux/demux
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Transponder:
Transponder generates C-band wavelengths
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Optional, depending on span loss
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Transponder generates C-band and L-band wavelengths
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RLA
ROADM Site
RLA
LRU
C-band CCMD
L-band CCMD
Transponder
RLA: C&L-band ROADM with Line amp
Includes C-band 1x32 WSS, Optical Channel Monitor, amplifiers, OTDR, OSC, channelized C-band and bulk
L-band ASE sources
•
LRU: L-band ROADM Upgrade
Includes L-band 1x32 WSS, Optical Channel Monitor, L-band amplifier, and channelized L-band ASE source
•
C-band CCMD: CCMD8x24
C-band Colorless, Directionless, and Contentionless mux/demux
•
L-band CCMD: CCMD8x24
L-band Colorless, Directionless, and Contentionless mux/demux
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Transponder:
Transponder generates C-band and L-band wavelengths
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Transponder
Bulk ASE
C-band λ
Built-in ASE noise loading provides optimal, predictable performance across C&L-bands for the lifetime of the system.
C-band wavelengths
Step 3
Product view