Adjustable digital electromagnetic driven light-barrier attenuator

A dimming attenuation and electromagnetic drive technology, applied in electromagnetic wave transmission systems, optics, instruments, etc., can solve the problems of large return loss of optical filters, narrow working band of attenuators, large dispersion of polarization modes, etc., and achieve low driving voltage , Improve working stability, and fast stepping speed
CN1218213CInactive Publication Date: 2005-09-07ZHEJIANG UNIV
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2005-09-07
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A attenuator comprises two input / output optical fibre collimators aligned through couple light path to be set on base with light blocking sheet between as its tail end contacted with ecentric in point-contact, light blocking sheet rotated at its level in coaxial with rotary shaft, rack bar engaged with gear to be set on leteral elastic sheet which is connected with longitudinal elastic sheet, the two connected to displacement driver separately. In the present invention, the gear and rack bar engaging mechanism is driven by the displacement driver to bring the ecentric so the light attenuation volume can be adjusted by moving the light blocking sheet.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an adjustable optical attenuator, in particular to a digital electromagnetic-driven light-shielding adjustable optical attenuator. Background technique

[0002] Optical attenuator (Optical Attenuator) is one of the important optical passive devices in modern optical transmission network. Its main function is to attenuate the optical signal power passing through the device and obtain the optical power output specified by the user. In the optical transmission process, the transmitted optical power varies due to the transmission distance of the optical fiber, the number of optical fiber connections, the number of optical components used, and the performance. For various optical transmission systems, when optical switching occurs between them, the input and output optical power requirements are also different because of their different characteristics. Therefore, when the optical power received / output b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More