Type

Journal Article

Authors

Qiaoyin Lu
Wei-Hua Guo
John Francis Donegan

Subjects

Physics

Topics
single mode reflection spectrum fabry perot laser measurement optical waveguide loss amplified spontaneous emission ase fourier series expansion harmonics

Waveguide Loss Measurement Using the Reflection Spectrum (2008)

Abstract A method for waveguide loss measurement purely based on the reflection spectrum is proposed. Using the Fourier series expansion of the single longitudinal mode in the reflection spectrum, the ratio between the second and first harmonics gives the round-trip loss even when the reflection coefficient of the launching optical field directly reflected by the waveguide facet is unknown. The internal loss of a Fabry?Perot laser diode was measured by the proposed method with results which compare well with those estimated from the amplified spontaneous emission spectrum.
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Full list of authors on original publication

Qiaoyin Lu, Wei-Hua Guo, John Francis Donegan

Experts in our system

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John Francis Donegan
Trinity College Dublin
Total Publications: 152