Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2. Отображено 2.
29-08-2023 дата публикации

Method and device for measuring relative refractive index difference between fiber core and cladding of optical fiber

Номер: CN116659812A
Автор: HUANG LIANGJIN, CHEN XIAO, HWANG SUN-MIN, AN YI, LI HAOBO, TANG SHIQING, CUI MENGFAN, WU HANSHUO, YANG HUAN, YAN ZHIPING, PAN ZHIYONG, YANG YI, WANG ZEFENG, ZHOU PU, JIANG ZONGFU, CHEN JINBAO
Принадлежит:

The invention relates to a method and a device for measuring the relative refractive index difference between an optical fiber core and a cladding. The method comprises the following steps: enabling single transverse mode laser beams with different wavelengths in a target application waveband to enter a to-be-measured optical fiber at equal wavelength intervals to obtain a light spot pattern of the to-be-measured optical fiber under each wavelength, and further obtaining a two-dimensional measurement matrix of which the row and column sizes are respectively the number of pixel points of the light spot pattern and the number of sampling wavelengths, performing Fourier transform on each row of data of the two-dimensional measurement matrix, and adding the data to obtain a differential mode group delay test value of the first high-order mode relative to the fundamental mode; and according to the lookup table that the differential mode group delay theoretical value corresponding to the high-order ...

Подробнее
Номер записи: 1
13-06-2023 дата публикации

Beam connecting structure and beam structure with same

Номер: CN116254917A
Автор: CUI MENGFAN, LIU JIE, RUAN HUIQIANG
Принадлежит:

The invention discloses a beam connecting structure and a beam structure with the same, the beam connecting structure comprises a first structural part, a second structural part, a movable part and a connecting rod mechanism, the first structural part is spaced from the second structural part in a first direction, and the movable part is movably arranged in a second direction; the connecting rod mechanism is pivoted with the movable piece and the first structural piece and pivoted with the movable piece and the second structural piece, the first structural piece is provided with a first structural inclined plane and a first structural base plane, the second structural piece is provided with a second structural inclined plane and a second structural base plane, and the movable piece is provided with a first movable inclined plane and a second movable inclined plane; the movable piece is located between the first structure inclined face and the second structure inclined face and abuts against ...

Подробнее
Номер записи: 2