One of HTF customer ask, can we support to design single fiber DWDM solution for 80km?
HTF: Of course we can support and design.
Your need point to point DWDM single fiber solution?
The fiber loss for 80km is ?
Need transmit how many data rate?
Customer: Yes, 20dB loss for 80km, 10x10G
What’s the max for your solution can transmit?
HTF: OK. We will choose 40ch DWDM mux demex, max 16 channel x 10G.
Customer: Why 40ch DWDM mux demux only can transmit 16 channel x 10G?
HTF:
(1)As it is single fiber, for 80km, need use BIDI edfa.
(2)Under the situation of using 40ch dwdm mux demux module. (C21-C60)
(3)BIDI edfa only can transmit the corresponding wavelength.
Customer cannot use use C37-C44 channels, is related with single fiber amplifier, C37-C44 are not in single fiber amplifier wavelength range.
single fiber amplifier only support the wavelength range is:
EDFA-Red 1547-1561nm ( DWDM mux&demux and DWDM optical module use C21-C36 )
EDFA-Blue 1528-1543nm ( DWDM mux&demux and DWDM optical module use C45-C60 )
|
Channel
|
On ITU grid in C-band
|
Channel
|
On ITU grid in C-band
|
||
|
Frequency (THz)
|
Wavelength (nm)
|
Frequency (THz)
|
Wavelength (nm)
|
||
|
C21
|
192.1
|
1560.61
|
C41
|
194.1
|
1544.53
|
|
C22
|
192.2
|
1559.79
|
C42
|
194.2
|
1543.73
|
|
C23
|
192.3
|
1558.98
|
C43
|
194.3
|
1542.94
|
|
C24
|
192.4
|
1558.17
|
C44
|
194.4
|
1542.14
|
|
C25
|
192.5
|
1557.36
|
C45
|
194.5
|
1541.35
|
|
C26
|
192.6
|
1556.55
|
C46
|
194.6
|
1540.56
|
|
C27
|
192.7
|
1555.75
|
C47
|
194.7
|
1539.77
|
|
C28
|
192.8
|
1554.94
|
C48
|
194.8
|
1538.98
|
|
C29
|
192.9
|
1554.13
|
C49
|
194.9
|
1538.19
|
|
C30
|
193
|
1553.33
|
C50
|
195
|
1537.4
|
|
C31
|
193.1
|
1552.52
|
C51
|
195.1
|
1536.61
|
|
C32
|
193.2
|
1551.72
|
C52
|
195.2
|
1535.82
|
|
C33
|
193.3
|
1550.92
|
C53
|
195.3
|
1535.04
|
|
C34
|
193.4
|
1550.12
|
C54
|
195.4
|
1534.25
|
|
C35
|
193.5
|
1549.32
|
C55
|
195.5
|
1533.47
|
|
C36
|
193.6
|
1548.51
|
C56
|
195.6
|
1532.68
|
|
C37
|
193.7
|
1547.72
|
C57
|
195.7
|
1531.9
|
|
C38
|
193.8
|
1546.92
|
C58
|
195.8
|
1531.12
|
|
C39
|
193.9
|
1546.12
|
C59
|
195.9
|
1530.33
|
|
C40
|
194
|
1545.32
|
C60
|
196
|
1529.56
|
|
The red color C37-C44 can not use in single fiber EDFA.
|
|||||
Customer: Thanks for you detail explain. Can you send me your solution for our customer to check?
HTF: Yes, Engineer had design the solution, use 40km type DWDM optical module, can help you save cost. The following is the solution for you to check.
| DWDM Single fiber solution from HTF
80km 20db Loss, ues 40km optical module |
||||||
| Item | Product | Model |
Specification |
A (pcs) | B(pcs) | Sub Total (pcs) |
| 1 | Chassis | HT6000-CH04 | 1U,19ich, 3 business slots + 1 network management slot, Dual power AC or DC-48V optional | 1 | 1 | 2 |
| 2 | Mux/ Demux | AAWG40 | 40CH passive MUX DEMUX card | 1 | 1 | 2 |
| 3 | EDFA | PA16/G25-R | Power amplifier card, Maximum output 16dBm, gain 25dB,Amplify the red light | 1 | 1 | |
| 4 | PA16/G25-B | Pre-amplifier card, Maximum output 16dBm, gain 25dB,Amplify the blue light | 1 | 1 | ||
| 5 | Optical Module | DWDM-SFP-10G-40 | SFP+ 10G DWDM 40km （C21~C36+C45~C60） | 16 | 16 | 32 |
| 6 | DCM | DCM60 | Dispersion compensator, compensates 60km | 1 | 1 | 2 |
| 7 | NMS | NMS | Network management card, 2xSFP +4xLAN+CLI | 1 | 1 | 2 |
If you have any other questions, Welcome to contact HTF team.