Laser capable of adjusting polarization degree

A laser and deflection adjustment technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problem of non-adjustable polarization degree of output light
CN101247017AInactive Publication Date: 2008-08-20SHANGHAI UNIV
0 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2008-08-20
Estimated Expiration
Not applicable · inactive patent

Smart Images

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

Abstract

The present invention relates to a laser capable of adjusting degree of polarization, which comprises of a semiconductor light amplifier connected drive power supply and a coupler, which are connected in serial with polarization controller used single mode fiber to form a bidirectional fiber optical ring resonator, the coupler is 2*2 broadband coupler whose two output interface are connected with two input port of a polarization beam combiner by optical fiber, polarization beam combiner outputs laser. The degree of polarization of laser can be remained above value of 0-100% to output common polarized laser or depolarization laser with low degree of polarization. The laser of present invention has simple structure, low cost, can resolve problems that the optical sensing, measuring and communication system depend on polarization.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a laser with adjustable polarization degree, which is a light source with adjustable polarization degree suitable for optical communication and optical sensing technology. Background technique:

[0002] The polarization dependence of light sensing, measurement, and communication systems has become a serious problem. To eliminate the dependence on polarization, passive depolarizers are widely used to convert polarized light sources into low-polarized depolarized light sources. The use of depolarized light sources can eliminate measurement inaccuracies caused by the polarization sensitivity of the instrument during the test. The use of a depolarized light source with a low degree of polarization and a stable degree of polarization is a key factor for Raman amplifiers and fiber optic sensors. For example, reducing and stabilizing the degree of polarization of the light emitted by the light source is beneficial to reduce gyro noi...

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