Nondestructive measurement of separated propagation loss for multimode waveguides

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We propose a method which applies a combination of the well-known phase modulator, butt-couple and prism coupler to the nondestructive measurement of each mode's propagation loss in multimode waveguides. By tuning to the effective optical length of a channel waveguide with a phase modulator, the contrast in the transmitted intensity of Fabry-Perot resonance for each guided mode separated by a prism coupler can be measured. The associated propagation attenuation coefficient and the propagation loss for each guided mode are then determined from these experimental results.

Original languageEnglish
Pages (from-to)133-135
Number of pages3
JournalApplied Physics Letters
Issue number2
Publication statusPublished - 1998 Dec 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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