Single mode WDM are mainly used for telecom applications. If only one fiber is available the transmission capacity can be doubled by using WDM. The components can be terminated with all common connectors. Depending on your application, WDMs are available in fusion technology (FSM) or with thin optical filters (TFF).
2Applications
One strength of optical data transmission is the ability one has to transmit multiple wavelengths and their corresponding measurement signals simultaneously without interference. In many cases different signals are designated for different receivers and special filters ensure that only the required wavelength reaches the detector. SEDI offers a broad range of WDM filters.
1310 nm / 1550 nm / 1625 nm Singlemode WDM
For instance, the 1310-nm, 1550-nm, and 1625-nm single mode WDMs are offered by ATI. With their help a fiber can be tested during operation. At 1310 nm and 1550 nm they transmit signals without any limitations. At 1625 nm a signal can be sent to test the transmission path.
The single mode 1625-nm blocking in-line filters allow the 1310-nm and 1550-nm communication wavelengths to pass, but do not let the 1625-nm OTDR wavelength through. In this way, the test signal is kept away from the receivers disturbed by the 1625-nm single mode WDMs.
Compact 1310 / 1550 nm WDM
The guidelines for development of the new high isolation WDM from SEDI called for compact sizes and high optical isolation. By integrating the WDM and the filter into one compact housing, a significant amount of space was won compared to SEDI’s standard cascading components.
Specifications
Insertion loss and directivity are typically 0.5 dB (minimum 55 dB). Isolation is specified by 50 dB at 1310 nm and 20 dB at 1550 nm. The second value can be increased by using an optical inline filter.
In addition to the high isolation values, the broad wavelength range is also noteworthy (1260 – 1360 nm and 1480 – 1625 nm). The device is based on 9/125-µm fibers with a primary jacket of 250 µm and comes inside an invar housing that measures 40 mm in length and 2.9 mm in diameter.
Contact
Downloads
- FBT WDM - 980/1060 nm PM Wavelength Division Multiplexer
- FBT WDM - 980/1550 nm PM Wavelength Division Multiplexer
- FBT Coupler - Wavelength Division Multiplexer 630/1060 nm
- FBT Coupler - Wavelength Division Multiplexer 980/1030 nm
- FBT Coupler - Wavelength Division Multiplexer 980/1060 nm
- FBT Coupler - Wavelength Division Multiplexer 980/1550 nm
- FBT Coupler - Wavelength Division Multiplexer 1060/1550 nm
- FBT Coupler - Wavelength Division Multiplexer 1310/1550 nm
- FBT Coupler - Wavelength Division Multiplexer 1480/1550 nm
- FBT WDM - 2 µm PM Wavelength D vision Multiplexer
- FBT WDM - 2 µm Wavelength Division Multiplexer
- WDM - 1064 m Band Pass Filter (2 Ports)
- WDM - 1310 and 1490/1550 nm FWDM
- WDM - 1310/1550 nm FWDM
- WDM - C Band Red/Blue Pass WDM
- WDM - C Band and L Band FWDM
- WDM - High Isolation 1310 and 1490/1550 nm FWDM
- WDM - High Isolation 1310/1550 nm FWDM
- WDM - L Band Red/Blue Pass FWDM
- WDM - L Band Supervisory Channel FWDM
- WDM - Pump/Signal WDM
- SM WDM 980/1550
Supplier
LASER COMPONENTS UK - Your competent partner for optical and optoelectronic components in the United Kingdom.
Welcome to LASER COMPONENTS UK Ltd., your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, fiber optics, and more is worth every Pound (£/GBP). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:
Goldlay House, 114 Parkway
Chelmsford Essex CM2 7PR
United Kingdom
Phone: +44 1245 491 499
Email: info(at)
