[All-Fiber Mach-Zehnder Interferometer Based on Lateral-Offset and Peanut Shape Structure].

A new in-fiber Mach-Zehnder interferometer (MZI) based on lateral-offset and peanut shape structure is proposed and demonstrated for the measure of curvature and liquid level. The sensor consists of lateral-offset structure and peanut shape structure. A section of single mode fiber (SMF) is spliced between them.

Translation and psychometric evaluation of the Chinese version of functional digestive disorders quality of life questionnaire.

Background: Few useful patient-reported outcomes scales for functional dyspepsia exist in China.

Aims: The purpose of this work was to translate and cross-culturally adapt the Functional Digestive Disorders Quality of Life Questionnaire (FDDQL) from the English version to Chinese (in Mandarin).

Methods: The following steps were performed: forward translations, synthesis of the translations, backward translations, pre-testing and field testing of FDDQL.