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Applications
Fiber Optic Transceiver Modules can be applied to these occasions or fields.
Ethernet
IPTV
FTTX
Security
Video Monitor
SDH/SONET
Data Communication
Storage Area Networks
SNS Page
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Related Products
10G SFP+ Transceiver-180x180.JPG)
10G XENPAK
40G QSFP+ TransceiverPerformance Feature
Stable
Low cost
Small size
Economic
Dust-proof
High speed
Hot-pluggable
Good EMI, EMC
Wide appliaction field
DDM function available
Long transmission distance
Good Anti-static performance
Module Knowledge
Recommended
Backreflection
Actually, all lasers are susceptible to back reflections. Back reflections disturb the standing-wave oscillation in the laser cavity, and the net effect is an increase in the effective noise floor of the laser. A strong backreflection can cause some lasers to become wildly unstable and completely unusable in some applications. It can also generate nonlinearities, called kinks, in the laser response. Most analog applications and some digital ones cannot tolerate these degradations.
The importance of controlling back reflection depends on the type of information being sent and the particular laser. Some lasers are very susceptible to back reflections due to the design of the laser chip itself. Most often the determining factor is how tightly the fiber is coupled to the laser chip. A low-power laser generally has weak coupling to the fiber. Perhaps only 5-10% of the laser power is coupled into the fiber.
This means that only 5-10% of the backreflection would be coupled into the laser cavity, making the laser relatively immune to back reflections. On the other hand, a high-power laser may have 50-70% of the laser chip output coupled to the fiber. This also means that 50-70% of the back reflection will be coupled back into the laser cavity. This makes high-power lasers more susceptible to back reflections.
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