Abstract

This paper describes a convenient technique for measuring the loss of optical devices that have connectors at both ends. The technique can provide both bidirectional internal and values temporal connector loss by the mathematical solution of four normalized power measurements. Accuracy of the internal loss measurement is limited by the need to use four variables that may fluctuate due to unsuitable fiber manipulations or leaky modes.

© 1995 Optical Society of America

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References

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  1. V. Shah et al., “Large fluctuation in transmitted power at fiber joints with polished endfaces,” presented at OFC/IOOC ’87, Reno, Nev., 1987, pap. TUF4.

Shah, V.

V. Shah et al., “Large fluctuation in transmitted power at fiber joints with polished endfaces,” presented at OFC/IOOC ’87, Reno, Nev., 1987, pap. TUF4.

Other (1)

V. Shah et al., “Large fluctuation in transmitted power at fiber joints with polished endfaces,” presented at OFC/IOOC ’87, Reno, Nev., 1987, pap. TUF4.

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Figures (3)

Figure 1
Figure 1

Model of optical device to be measured. The parameters α0 and α0′ are internal optical loss for light traveling in respective directions.

Figure 2
Figure 2

Conventional procedure for measuring internal optical loss in one direction by canceling the connection loss. The value of α0 in dB is given by P0 − P1.

Figure 3
Figure 3

Proposed measurement procedures.

Equations (10)

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α 1 + α 0 = P 0 - P 1 ,
α 1 + α 0 + α 2 = P 0 - P 2 ,
α 1 + α 0 + α 2 = P 0 - P 2 ,
α 0 + α 2 = P 0 - P 1 .
α 0 = ( P 0 - P 1 ) - ( P 1 - P 2 ) ,
α 0 = ( P 0 - P 1 ) - ( P 1 - P 2 ) ,
α 1 = P 1 - P 2 ,
α 2 = P 1 - P 2 .
α ins = α 0 + α 1 + α 2 = P 0 - P 2 ,
α ins = α 0 + α 1 + α 2 = P 0 - P 2 .

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