Detailed interpretation: still broaden and expand. Volume 7 of Wu Sheng Ji in Yuan Dynasty: "Widen Lanzhou City and make the mountain close to the river." Still open. On Mao Dun's boat: In the distance, where the river is wide and the left hand has a swift current, the oblique sunlight turns into a ten thousand-point Venus.
Data expansion: pulse broadening
A pulse signal, such as a voltage rising edge signal starting from zero, passes through time t, followed by a falling edge, and this pulse width is T. On an optical fiber with the same length, the time difference between the highest sub-mode and the lowest sub-mode is the pulse broadening generated by this optical fiber. When the optical pulse propagates in multimode fiber, it will gradually broaden and cause distortion.
example sentence
1. With the decrease of porosity and pore size, the vibration absorption coefficient of porous aluminum decreases, the absorption spectrum curve moves to the low frequency direction, and the frequency band width becomes wider.
If we can accept this fact, we will not shift all the responsibilities to others, but develop an attitude of forgiveness, which is an important step to get rid of hatred.
3. Its Bian Feng is broadened in any case. When the compression direction of light field fluctuation is not parallel or perpendicular to the coherent excitation direction of light field amplitude, the radiation spectrum presents asymmetric distribution.
4. The analysis results show that the Raman scattering effect in the pulse plays an important role in the spectral broadening of the long wavelength band, whether in the abnormal dispersion region, normal dispersion region or zero dispersion point of photonic crystal fiber.
If we can accept this fact, we will not shift all the responsibilities to others, but develop an attitude of forgiveness, which is an important step to get rid of hatred.
6. With the decrease of porosity and pore size, the vibration absorption coefficient of porous aluminum decreases, the absorption spectrum curve moves to the low frequency direction, and the frequency band width becomes wider.
7. Ignoring the spatial diffraction effect, the time characteristics of grating with slit aperture to broaden the output beam of pulse shaper are studied.
8. In the green grass covered by rain, there is a semi-circular broken skull, and the flat and broad forehead shows that the deceased is by no means an idle generation.