
XYT-CWDM-ABS-M/D
【NO.】CWDM-TFF-25Nv03
CWDM ABS Box Coarse Wavelength Division Multiplexing Module (1270-1610nm)

l Low insertion loss l ABS box type
l center wavelength:1270~1610nm l Bare fiber, sleeve, and joint types are optional
l High stability and reliability l Center wavelength optional
l SMF-28e l Acceptable power options
A wavelength division multiplexer is a device that can couple two or more different wavelengths of optical signals in a single core optical fiber for transmission. Conversely, it can also separate and demultiplexing two or more different wavelengths of optical signals in a single core optical fiber separately. As shown in the figure, two different beams of light are input from the common end. WDM devices allow one specific wavelength of light to be transmitted and output at the transmitting end, while the remaining wavelengths are reflected and coupled to the reflecting end for output, which is the process of light splitting. Similarly, the optical path of WDM devices is reversible.

Dielectric film filter (TFF) adopts the principle of thin film interference, which causes strong reflection of certain wavelengths of light on the thin film and prevents it from passing through, while other wavelengths of light can pass through the thin film. To improve reflection efficiency, dielectric film filter chips usually use multiple layers of thin films (usually 50-100 layers), which interfere with each other to pass a certain wavelength and reflect other wavelengths.

Insertion loss calculation: the ratio of optical power between input and output ports

2CH~18CH | ||||||
Center wavelength (nm) | ITU or ITU+1 | |||||
Wavelength range (nm) | 1270~1610 to 1271~1611 | |||||
Channel spacing (nm) | 20 | |||||
Bandwidth range (nm) | ±7.5/±6.5 | |||||
Insertion loss (dB) | 4CH | 8CH | 16CH | 18CH | ||
≤1.6 | ≤2.5 | ≤4.5 | ≤5.5 | |||
Channel consistency (dB) | ≤0.6 | ≤1 | ≤1.5 | ≤1.8 | ||
Isolation between adjacent channels (dB) | >30 | |||||
Non adjacent channel isolation (dB) | >40 | |||||
Bandwidth fluctuation (dB) | 0.3 | |||||
Insertion loss temperature sensitivity (dB/℃) | <0.005 | |||||
Polarization related loss (dB) | <0.1 | |||||
Return loss (dB) | 45 | |||||
Directionality (dB) | 50 | |||||
Polarization Mode Dispersion | <0.1 | |||||
Enduring power (W) | 0.5 | |||||
Connector Type | FC/APC Or other | |||||
Fiber Type | SMF-28e | |||||
Fiber length (m) | 1M or customized | |||||
Package size (L * W * H) (mm) | 80x60x12 | 100x80x10 | 120x80x18 | |||
Working temperature (℃) | -5~+70 | |||||
Storage temperature (℃) | -40~+85 | |||||
Maximum tensile force (N) | ≤5 | |||||
* The specification is without a connector, and the test data indicator is 25 ℃.
* For devices with connectors, the insertion loss is 0.3dB higher and the return loss is 5dB
* For different power parameters, the product adopts different packaging sizes.
Packaging structure diagram (mm):
Spectrum diagram (dB):

Item sequence | Channel number | Center wavelength (nm) | color |
1 | 27 | 1270 | Lavender |
2 | 29 | 1290 | Deep Sky Blue |
3 | 31 | 1310 | yellow-green |
4 | 33 | 1330 | Ochre yellow |
5 | 35 | 1350 | pink |
6 | 37 | 1370 | light brown |
7 | 39 | 1390 | White |
8 | 41 | 1410 | silvery |
9 | 43 | 1430 | black |
10 | 45 | 1450 | yellow-orange |
11 | 47 | 1470 | grey |
12 | 49 | 1490 | Purple |
13 | 51 | 1510 | blue |
14 | 53 | 1530 | green |
15 | 55 | 1550 | yellow |
16 | 57 | 1570 | Orange |
17 | 59 | 1590 | red |
18 | 61 | 1610 | brown |
Ordering Notice: | |
Model | Description |
XYT- CWDM-ABS-M/D-4CH(1270~1310)-Se-2.0-1M-FA | ABS box type MUX+DEMUX 4-channel (1270~1310nm) SMF-28e fiber optic, 2mm sleeve, fiber length 1 meter, connector FC/APC |
Special requirements for specifications and parameters, contact the engineer for customization | |
Ordering information: | |||||
CWDM= Coarse wavelength division multiplexer module | XYT-CWDM-A-B-C-D-E-F-G-H | ||||
A=Structure | ABS=ABS Box Module | …… | SS=Customizable | ||
B=Module type | MUX=Multiplexer | DEMUX=Demultiplexer | M/D= MUX + DEMUX | S=optional | |
C=number of channels and wavelength | 4CH=4CH(1270~1310) | 8CH=8CH(1270~1410) | …… | SS=Customizable | |
D=Other ports | MON=monitoring end | UPG=Extended End | S=optional | ||
E=Fiber optic type | Se= SMF-28e | SS=Customizable | |||
F=Type of casing | 0.9=900μm | 2.0=2.0mm | 3.0=3.0mm | S=optional | |
G=fiber length | 1M=1 meter | 2M=2 meters | …… | SS=Customizable | |
H=Type of connector | FA=FC/APC | SA=SC/APC | …… | N= None | S=optional |
Fiber optic characteristics:

Type | SMF-28e |
Working wavelength | 1285 – 1330@ 1310 nm 1525 – 1575 @ 1550nm |
Numerical aperture NA | 0.080 ± 0.005 |
Numerical aperture of cladding (5%) | ≥ 0.46 |
Mode field diameter | 9.2 ± 0.4µm @1310 nm 10.4 ± 0.5 @ 1550 nm |
Cut off wavelength | 入cf≤ 1280 nm |
Core layer loss | ≤ 0.03 dB/km @ 1310 nm ≤ 0.02 dB/km @ 1550nm |
Envelope attenuation | ≤ 15 dB/km @ 1095 nm |
Coating diameter | 125.0 ± 0.7 µm |
core diameter | 9 µm |
Coating layer diameter | 242.0± 5 µm |
Deviation of cladding/coating layer | < 5.0 µm |
Core/cladding concentricity deviation | ≤ 0.50 µm |
Coating layer material | acrylate |
Long term bending radius | ≥ 13 mm |
Level of strength testing | ≥ 200 kpsi (1.4 GN/m²) |
Optical fiber connector:

Physical character:
Type | Instructions | Notes |
durability test | Typical insertion loss variation<0.1 dB | The typical value change of optical signal loss after 500 insertions and removals of the connector is less than 0.1 dB |
Number of fiber cores | Single work (1-core fiber optic) | The connector is a single core structure, suitable for independent connection of a single optical fiber |
Applicable cable type | 900 µ m to 3 mm | The connector is compatible with optical fibers or cables with an outer diameter between 900 microns and 3 millimeters |
Insert material | Zirconia (ZrO ₂) | The connector plug is made of zirconia ceramic material, which has high wear resistance and stability |
Optical characteristics:
Parameter indicators | Single mode | Multi mode | |||
Low loss UPC | Standard UPC | Low loss APC | Standard APC | Standard MM | |
Typical insertion loss (dB) | 0.05 | 0.08 | 0.07 | 0.1 | 0.1 |
Maximum insertion loss (dB) | 0.15 | 0.2 | 0.15 | 0.25 | 0.2 |
Typical Return Loss (dB) | ≥55 | ≥65 | ≥25 | ||
Insert diameter (µ m) | 125 µm | 127µm | |||
Working temperature (℃) | 40°C to +75°C | ||||
* This statement applies to the product description, 'Our company's products will be continuously updated, and we reserve the right to modify relevant indicators at any time without prior notice.
The optical passive device products delivered by FiberHome undergo rigorous testing, including spectral testing, insertion loss, extinction ratio, tensile testing, isolation testing, etc. Obtained quality certifications such as ISO 9000/ROHS/CE/FC.

At present, XYTshaertop has a 100000 level dust-free workshop of 1000 square meters. Obtained the high-tech enterprise certificate and multiple invention patents issued by the Chinese government. We are committed to producing better passive component products at a good cost. XYTshaertop makes it easier for you to acquire the right technology to achieve your goals, achieve business transformation, and help you stay competitive. We can help you reduce total cost of ownership, save capital, and accelerate growth.
For more information about fiber optic products and equipment, please contact your sales representative or visit http://www.xyt-tech.com http://www.xyt-tech.cn
|
Products damaged due to human or non-use of other causes of improper,we promises one year warranty and lifetime maintenance,but the unauthorized disassembly equipment caused damage is not covered under warranty and returned within range. |
|
Under normal use,if there are product quality problems,or not work normally,we provide free repair or replacement service within one year;Within three years more than one year,we provide to collect the material cost,maintenance free. Repair warranty period of three years from the freight borne by each of the parties.After three years of warranty,the material cost,maintenance,freight(refers to the product of the two-way shipping to and from)shall be borne by the user. |
|
We promise that the product we provide can meet the performance requirements of users , and it is supplied by the user's sample request. |