PBN

CWDM

Coarse Wavelength Division Multiplexer

AOCM3900 datasheet CWDM Datasheet

 

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CWDM

About the Product

The Coarse Wavelength Division Multiplexers (CWDM) come as stand-alone modules and as 19” rack-mount assemblies, designed to multiplex (mux) or de-multiplex (demux) optical signals in CWDM systems with multiple channels at an ITU standards defined spacing of 20 nm.

The CWDM features low insertion loss, high isolation and excellent environmental stability.

The ITU-T G.694.2 standard compliant optical wavelength channels available are 1271 nm to 1611 nm at 20 nm spacing. Previously known as 1270 nm to 1610 nm until the relevant ITU standards had redefined the wavelengths to cater for laser temperature issues.

A special range of CWDM units have been developed for RFOG (Radio Frequency over Glass) applications, permitting DOCSIS and HFC to operate over a EPON/GPON compliant Passive Optical Network (PON) as commonly deployed for Fiber to the Home (FTTH) developments.

  • Cost-effective solution for multi-wavelength systems.
  • Excellent wavelength stability.
  • High isolation.
  • Low insertion loss.
  • Epoxy-free optical path.
  • SC/APC, LC/APC, FC/APC and E2000/APC connectors available.
 
  • Optional 1311 nm port for forward path transmission to HFC nodes. Either single port or with internal splitter to match number of CWDM ports for feeding multiple HFC nodes over one fiber.
  • Options for assembly into 19” sub-racks, ready for deployment.
Optical Performance
Centre wavelength (1) 1271 nm to 1611 nm (2)
Channel spacing 20 nm
Channels 1, 2, 4, 6, or 8
Channel pass band ≥ 14 nm
Pass band flatness ≤ 0.5 dB
Insertion loss 1 channel, [W] = 1 0.7 dB
4 channels, [W] = 4 1.4 dB to 1.6 dB
8 channels, [W] = 8 1.8 dB to 2.5 dB
Adjacent channel isolation ≥ 30 dB
Non-adjacent channel isolation ≥ 50 dB
Return loss ≥ 45 dB
Connectors SC/APC, E2000/APC, FC/APC, LC/APC(Green 8° angle polished (/APC) standard. Blue flat polished (/PC) optional.
General
Operating temperature 0 °C to +70 °C
Storage Temperature -40 °C to +85 °C
Dimensions (H x W x D) (4) CWDM 2 to 6 channels 80 x 120 x 13 mm
CWDM 8 to 16 channels 87 x 130 x 13 mm
CWDM19-[W] 225 x 430 x 40 mm
Ship size (H x W x D) CWDM 1 to 2 Channels 88.9 x 50.8 x 8.3 mm
CWDM 3 to 5 Channels 120 x 80 x 13 mm
CWDM 6 to 8 Channels 130 x 87 x 13 mm
CWDM19-[W] 270 x 565 x 75 mm
Weight CWDM < 0.09 kg (3)
CWDM19 < 6.00 kg
Ship weight CWDM < 0.30 kg (3)
CWDM19 < 8.00 kg

(1) As per ITU-T G.694.2. The CWDM ITU standard has re-defined the center wavelengths from xxx0 nm to xxx1 nm.

(2) Wavelength shifts 1 nm per 10 ºC.

(3) Weight will vary depending on model.

(4) Different packaging options may be available upon customer request.

* Subject to change without further notice.

CWDM-[W]-[X]-[Y]-[Z]
CWDM19-[W]-[X]-[Y]
Coarse Wavelength Division Multiplexer, standalone unit.
Coarse Wavelength Division Multiplexer, in a 19” sub-rack (1 RU).
W Number of channels (prefix with “D” for full duplex models)
0 1 channel (channel pass filter for one CWDM channel only)
1 1 channel (add/drop style multiplexer with one tuned port and one broadband port)
2 2 channels
3 3 channels
4 4 channels
5 5 channels
6 6 channels
7 7 channels
8 8 channels
2F 2 channels + 1 x 1311 nm (5)
4F 4 channels + 1 x 1311 nm (5)
6F 6 channels + 1 x 1311 nm (5)
8F 8 channels + 1 x 1311 nm (5)
2FS 2 channels + 2 x 1311 nm (5)
4FS 4 channels + 4 x 1311 nm (5)
6FS 6 channels + 6 x 1311 nm (5)
8FS 8 channels + 8 x 1311 nm (5)
X(Starting channel) lowest wavelength ITU channel
27 1271nm
29 1291nm
31 1311nm
33 1331nm
35 1351nm
37 1371nm
39 1391nm
41 1411nm
43 1431nm
45 1451nm
47 1471nm
49 1491nm
51 1511nm
53 1531nm
55 1551nm
57 1571nm
59 1591nm
61 1611nm
Y (Other connectors may be available on detailed request.) Optical connector type
0 No connectors
SC SC/ APC angle polished, green
LC LC/APC angle polished, green
FC FC/ APC angle polished, narrow key
E E2000/APC angle polished, green
Z Pigtail type
B 2 mm yellow buffered pigtails
N 0.9 mm nylon pigtails
0 Bare fibers for direct splicing

(5) 1311 nm is measured at an assumed ambient temperature of 35 ºC.

  • CWDM