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3. Product overview

Description

Intended for free space optical communication, the TILBA-R is 

an optical device designed to improve the reliability of the optical 

link at reception in the presence of atmospheric turbulence or 

pointing errors. 

TILBA-R is a Multi-Plane Light-Conversion (MPLC) based 

spatial demultiplexer that decomposes a beam wave-front 

profile into a limited number of spatial modes. The modes are 

collected and sent to a single-mode fiber.

Operating instructions

The TILBA-R demultiplexer is ready for use. 

1. 

Connect your input signal single-mode fibers to the 

corresponding LC connector.

2. 

Verify the properties of the TILBA-R with the alignment 

procedure. The properties should match the performance 

report. 

Example of intensity profile of Hermite-Gaussian modes.

The below specifications are for a typical TILBA-R device and 

may vary for each specific purchase order. 

Specifications

TILBA-R RECEIVER OPTICAL PARAMETERS

PARAMETERS

TYPICAL VALUE AT 20°C

COMMENTS

Number of spatial mode diversity

Between 6 and 15

Up to 45 modes

Wavelength of operation

C-band

Other wavelenghts available

Signal output fiber

SMF -28e+ or polarization maintaining 

SMF

PM fibers require free space input

Signal input

Standard 50/125 MMF (OM2)

Other fibers available

Free space input

Collimated free space

Insertion loss

<3 dB

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Summary of Contents for Tilba R

Page 1: ...MITIGATE TURBULENCE WITHOUT ADAPTIVE OPTICS INSTRUCTION MANUAL 2020 11...

Page 2: ......

Page 3: ...scription Operation instructions Specifications Mechanical drawing Free Space alignment Back to back in a single MUX DEMUX configuration Back to back measurement with a MUX and DEMUX configuration Cro...

Page 4: ...optical fiber are laser based and may be hazardous to your eyes Please follow all the necessary safety precautions Warning All statements regarding technical data in this instruction manual are only a...

Page 5: ...ing transport and must be very carefully removed from the transport case 1 First loosen the demultiplexer from the transport case without removing it 2 Next carefully take out the demultiplexer and th...

Page 6: ...mode fibers to the corresponding LC connector 2 Verify the properties of the TILBA R with the alignment procedure The properties should match the performance report Example of intensity profile of Her...

Page 7: ...7 Mechanical drawing...

Page 8: ...ent of insertion losses and the basic functionality of the multiplexer Depending on the material available possible options are Figure 1 with only 1 lens or Figure 2 with two lenses We recommend optio...

Page 9: ...rapidly becomes very sensitive At the best alignment position insertion losses for the fundamental mode should be close to the value on the performance report x2 If a multi channel power meter is avai...

Page 10: ...coupling efficiency for the full MUX DEMUX pair for channel i is equal to i Pi i Pin i Calculation of crosstalk Method for obtaining normalized crosstalk The transmission matrix obtained by the measur...

Page 11: ...and thereby voids the warranty Troubleshooting The TILBA R is a passive device and rarely constitutes a point of failure If you observe an abnormal amount of loss in the systems clean the LC PC conne...

Page 12: ...38 boulevard Albert 1er 35200 Rennes France www cailabs com contact cailabs com CAILabs CAILABS...

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