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Optical unit with wavelength compensator

A technology of optical units and compensators, applied in the field of optical communication systems, can solve problems such as difficulties and time-consuming screening processes

Active Publication Date: 2017-05-03
FINISAR SHANGHAI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obtaining material of desired quality is difficult in some cases and the screening process to identify material of desired quality is time consuming

Method used

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  • Optical unit with wavelength compensator
  • Optical unit with wavelength compensator
  • Optical unit with wavelength compensator

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 A perspective view of an optical unit 100 is shown, which is arranged according to at least some of the embodiments described herein. In some embodiments, the optical unit 100 and / or other optical units disclosed herein may be implemented, for example, in a DLI, an interleaver, a deinterleaver, or other environments where it is desirable to provide The center wavelength coincidence between the propagating two independent beams is used to improve polarization mode scattering (PMD), chromatic dispersion (CD) and / or polarization dependent frequency shift.

[0019] Optical unit 100 includes one or more optical elements, which may include opposing first block 110 and second block 150 passing through optical block 140, first compensator 120 and The second compensators 130 are away from each other. The first block 110 contains a beam splitter 112 and a first reflector 114 . The second block 150 includes a coupler 152 and a second reflector 154 . Each of the first ...

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PUM

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Abstract

The invention relates to an optical unit which may comprise a first port coupled with a second port via an optical path. The optical unit may also include a compensator disposed in the optical path. The compensator is rotatable about an axis. Rotating the compensator about the axis can change the distance of the optical path through the compensator, thereby changing the optical path length of the optical path.

Description

technical field [0001] The present invention relates generally to optical communication systems, and more particularly, some exemplary embodiments relate to an optical unit that may be used in some optical communication systems. Background technique [0002] Some optical communication systems may rely on splitting a light beam into multiple parts. For example, an optical communication system utilizing a delay line interferometer (DLI (delay line interferometer)) and the use of an interleaver can split a light beam into multiple parts. In some cases, the uniformity of wavelengths among the multiple parts of the beam, especially the central wavelength uniformity of the multiple parts, can allow better polarization mode scattering performance and dispersion performance in these optical communication systems. [0003] One way to achieve center wavelength uniformity in portions of the beam may be to select materials with specific qualities for splitting the beam and manipulating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00
CPCG02B17/023G02B6/272G02B6/2935G02B6/29386G02B26/06G02B26/002G02B26/007G02B27/0068G02B27/10G02B27/283G02B27/286
Inventor 陈凡李惠萍张江涛兰发华
Owner FINISAR SHANGHAI INC