O-net Communications (shenzhen) Limited

O-net Communications Limited

Aihua Yu

Bichang Huang

Zhigang Wang

Yimin Hua

A movable system includes a movable platform that includes a motorized drive to cause the movable platform to move in position, and a compartment located in an interior part of the movable platform; and an LIDAR system mounted to the movable platform including a probe fiber laser module located on the movable platform and producing pulsed probe laser light and scan the pulsed probe laser light out for optically sensing presence of one or more objects in the surrounding area based on detection of reflected probe laser light from the one or more objects. The probe fiber laser module includes a base laser module located inside the enclosure of the compartment and remote laser modules distributed at the platform instrument holding portions to scan the pulsed probe laser light out for optically sensing presence of one or more objects in the surrounding area.

Vehicle-mounted light detection and ranging (LIDAR) system

The invention discloses an apparatus for enhancing the signal power to ASE power ratio in an optical amplifier including a 1&#xd7;n input optical switching component, n band-pass filters, and an n&#xd7;1 output optical switching component, wherein the signal power is allowed to pass through the band-pass filter switched by the 1&#xd7;n input optical switching component and the n&#xd7;1 output optical switching component.

Method and apparatus for enhancing signal-to-noise power ratio in optical fiber amplifiers

A Self-adapting feed forward control apparatus in an optical amplifier includes a feed forward controller for collecting target output power (Pout) and controlling drive current of a pump laser in the optical amplifier; a feedback controller for calculating target output power (Pt) and collecting actual output power (Pout), calculating deviation between (Pt) and (Pout), and controlling drive current of the pump laser; and a parameter estimator for collecting power target, output power and summation of output signal of the feed forward controller and feedback controller, and estimating the feed forward parameter and updating the parameter of the feed forward controller. The apparatus can automatically correct the feed forward control parameters according to the variation of EDFA parameters due to environmental condition changes or device aging.

Self-adapting feed forward control apparatus and method in an optical amplifier

A method for acquiring spectrum shape of a gain flattening filter of a doped optical fiber amplifier comprises the steps of: measuring spectrum shapes at two gain point (H, L) of the doped optical fiber with invariable fiber length respectively; and acquiring various gain spectrums of the doped optical fiber with various fiber length and various population inversion level according to an expression:ErGain(&#x3bb;,')=[ErGain(&#x3bb;)+[ErGain(&#x3bb;)&#x2212;ErGain(&#x3bb;)]*Wherein Gain(&#x3bb;) refers to the spectral function of gain, x is &#x394;&#x2032;inv/&#x394;inv which refers to change of population inversion level, and L&#x2032; is set as proportion of doped fiber length. Gain spectrums of the doped optical fiber with various fiber length can be acquired by measuring spectrum shapes at two gain point (H, L) of the doped optical fiber in invariable fiber length and applying change rule of gain spectrum of the doped optical fiber in different population inversion level, which improves the flexibility for design of amplifier.

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Shenzhen, China

Aihua Yu