DEP Depolarizer
The DEP series of passive depolarizers depolarize light sources to an output DOP <5%. A standard configuration can be used for light sources with coherence lengths less than 10 meters, but custom versions can be made for specific light sources.
Depolarizers function by introducing a differential delay between the orthogonal polarization components that is longer than the coherence length of the light, to remove the phase relationship between the two polarization components. Different structures can be used depending on the requirements of the application.
Key Features
Center wavelength | 1310
or 1550 nm standard, others available |
Operating wavelength range | ±50 nm |
Output DOP | <5% |
Coherence length of light source | DEP-002: 0 to 30 mm (for broadband sources) DEP-003: 0 to 300 m (for narrowband sources) |
IL1 | <1.4 dB (1.0 dB typical), excluding connectors |
Fiber type2 | Input: PM Panda fiber |
Notes:
- For DEP-003 with 10 m coherence length.
- For DEP-003. DEP-002 is typically all PM fiber, but is designed to connect to SM fiber on both input and output sides.
Solutions and Applications
A depolarizer is useful to neutralize polarization dependence in a system. Applications include fiber sensor and communication systems.
