BRIEF INTRODUCTION
With the advent of data communication and telecommunications technology, MAN systems have gradually developed to become a full service network that integrates voice data and image.
Reduction in the signal intensity in the MAN system is not an important factor to consider since the signal transmission distance would be less than 100km Hence an optical amplifier is not needed in this system where CWDM is used.
CWDM is the abbreviation for coarse wavelength division multiplexer. At its most basic the CWDM is a signal combiner. It combines multiple signals on laser beams at various wavelengths for transmission along a single optical line. This wavelength division multiplexer allows lights with wavelengths from 1,270nm to1,610nm to travel through 18 channels spaced 20nm apart. KOC CWDM products can be used ABS box or 1U Rack packaging.
Benefits of using this multiplexer include low cost low consumption a small physical size and flexible mounting. All the CWMD devices from our company have been through temperature cycle test and drop test that lasts for 24 hours. Hence we can assure customers of high reliability and stability of our product.
FEATURES
Widely operating wavelength range
Low insertion loss
High channel isolation
High stability and reliability
Ultra flat wide pass band
Epoxy free optical path
APPLICATIONS
System monitoring
WDM system
Transmitters and fiber lasers
Fiber optical amplifier
Fiber optic instruments
SPECIFICATIONS
ITEM | PARAMETER | Unit |
| Output channel wavelength Range | Customized:1270~1610 | nm |
| Pass Channel wavelength Range | Customized:1270~1610 | nm |
| Reflect Channel wavelength | Customized :1270~1610 | nm |
| Insertion Loss | Pass Channel | <0.60 | dB |
| Reflect channel | <0.60 | dB |
| Insertion Loss Ripple | Pass Channel | ≤0.30 | dB |
| Reflect channel | ≤0.30 | dB |
| Isolation | Pass Channel | ≥40 | dB |
| Reflect channel | ≥20 | dB |
| Return Loss | >50 | dB |
| Insertion Loss Temperature Sensitivity | <0.005 | dB/ºC |
| Polarization Dispersion Loss | <0.10 | dB |
| Polarization Mode Dispersion | <0.10 | Ps |
| Directivity | ≥50 | dB |
| Max Power Handling | 300 | mW |
| Operating Temperature | -20~+70 | °C |
| Storage Temperature | -40~+85 | °C |
| Fiber Type | SMF-28e,Bare OR 0.9mm Loose Tube |
| Package Dimension | ¢5.5XL32 OR ABS BOX | mm |
Note1: All values specified are without connectors.