ACCELINK TECHNOLOGIES CO., LTD.

An optical element ( 12 ) fixation structure, comprising: a module housing ( 10 ), a fixation body ( 111 ), a first fixation unit ( 112 ), a second fixation unit ( 113 ), a third fixation unit ( 114 ), and an elastic fixation unit ( 115 ), wherein the first fixation unit ( 112 ) is used for fixing a first end ( 131 ) of an optical fiber connector and a first end ( 121 ) of an optical element to a first end ( 1111 ) of the fixation body in a snap-fit manner, the second fixation unit ( 113 ) is used for fixing a second end ( 132 ) of the fiber optic connector and a second end ( 122 ) of the optical element to a second end ( 1112 ) of the fixation body in an attaching manner, and the third fixation unit ( 114 ) is used for fixing side edges of the optical element ( 12 ) to both sides of the fixation body ( 111 ). The optical element ( 12 ) fixation structure fixes the fiber optic connector ( 13 ) and the optical element ( 12 ) by means of an ingenious structural fitting between the optical element ( 12 ) fixation structure and both of the fiber optic connector ( 13 ) and the optical element ( 12 ) without assistance of other parts, which simplifies the components of the optical element ( 12 ) fixation structure, and meanwhile achieves more convenient installation and disassembly.

A BOSA device assembling apparatus and a mounting method thereof. The assembling apparatus comprises: a BOSA device ( 1 ) including a base and a middle seat ( 2 ) including a bottom plate ( 23 ), a first limiting arm ( 21 ) provided with a first snap-fit hole ( 211 ), and a second limiting arm ( 22 ) provided with a second snap-fit hole ( 221 ), the base comprising a first side surface ( 11 ) provided with a first boss ( 13 ) and a second side surface ( 12 ) provided with a second boss ( 14 ), which are oppositely set. The first limiting arm ( 21 ) and the second limiting arm ( 22 ) being both set on the bottom plate ( 23 ) and oppositely set, the bottom plate ( 23 ), the first limiting arm ( 21 ) and the second limiting arm ( 22 ) forming a mounting space. The bottom plate ( 23 ) is further provided with at least one protrusion (231) which is set on a side facing away from the first limiting arm ( 21 ) and is used to be fixed in a positioning hole ( 31 ) of a PCB board. The base is set in the mounting space, and the first boss ( 13 ) is snap-fitted in the first snap-fit hole ( 211 ), and the second boss ( 14 ) is snap-fitted in the second snap-fit hole ( 221 ), so as to fix the BOSA device ( 1 ) on the middle seat ( 2 ).

The present invention relates to the field of optoelectronic communication and provides a module with a network interface. The module with a network interface comprises a base, a circuit assembly, and shielding elastic sheets. The base is provided with a screw seat thereon, and a first boss is provided on a side surface of the base. The circuit assembly comprises a circuit board, a network interface, and a grounding spring sheet. The circuit board is provided with a first notch which is coupled to a side wall of the screw seat; the grounding spring sheet is fixed on the circuit board and connected to the base. The shielding elastic sheet comprises two oppositely arranged side walls, each of which is provided with a folded edge, wherein the folded edge has a first buckling hole, which is buckled into the first boss to fix the shielding elastic sheet on the base. The present invention achieves the grounding of the circuit board and improves the EMC performance of the module through the setting of the shielding elastic sheet and the grounding spring sheet.

Disclosed are a control method and an optical fiber amplifier. The optical fiber amplifier is configured to execute the control method. The method comprises: initially adjusting a target gain on the basis of a first offset gain to obtain the post-initial-adjustment target gain; when the actual power of the pump laser reaches target power determined on the basis of the post-initial-adjustment target gain, obtaining, on the basis of a first signal optical power and a second signal optical power, a second offset gain and a first offset slope through calculation; adjusting again the post-initial-adjustment target gain according to the second offset gain to obtain a adjusted target gain; and adjusting a target slope according to the first offset slope to obtain a adjusted target slope. This solution can provide high precision control for the gain and the slope of the optical fiber amplifier.

A coherent receiving device and anemometry lidar system. The device includes: a polarization maintaining optical fiber pin for receiving local oscillation light and outputting it to frequency mixer; a polarization beam splitting prism for receiving signal light, splitting it into first and second signal light, and outputting them to the frequency mixer; the frequency mixer for mixing the first and second signal light with the local oscillation light and outputting the mixed light to PD array; the PD array for converting the mixed light to differential current signal; and a signal processing circuit for converting the differential current signal to differential voltage signal whose derivation formula includes part of frequency difference between the signal light and local oscillation light, detecting a frequency of the differential voltage signal to obtain a value of the frequency difference, and obtaining Doppler frequency shift amount of the signal light according to the value.

An optical fiber adapter, relating to field of optical communication and comprising: a housing with a chamber having a first and second chamber connected with each other and respectively with two opposite ends of the housing; a retaining member integrally formed with the housing and provided within the first chamber, which is enclosed to form an receiving cavity having a first and second openings at one and other ends, respectively, and a third opening extending along a length direction of the retaining member; a retaining cover plate for detachably connecting to the retaining member to seal the third opening; and a ceramic sleeve provided within the receiving cavity and adjacent to the retaining cover plate, which has a third chamber connected with the first and second opening, and is limited within the receiving cavity. The retaining member is an integrated structure, improving the collimation performance of the adapter.

An integrated optical circulator comprising at least two single-fiber bidirectional optical fiber interfaces, a refractive element group, an optical isolation element group, and an optical fiber array, wherein the refractive element group and the optical isolation element group are sequentially arranged on a same optical path; incident signal light from each optical fiber interface sequentially passes through the refractive element group and the optical isolation element group, then is output by a corresponding outgoing optical fiber of the optical fiber array; incident signal light from each incident optical fiber of the optical fiber array sequentially passes through the optical isolation element group and the refractive element group, then is emitted by a corresponding optical fiber interface. Multiple optical circulators are integrated within the volume of a same optical circulator, reducing the volume occupied by optical circulators, lowering overall cost of the device, and improving convenience of optical path integration.

An adapter assembly, relating to field of optical communication and comprising: a housing enclosed to form a chamber; a holding sleeve integrally formed with the housing, in which a receiving chamber is provided, wherein one end of the holding sleeve is provided in the chamber and the other end protrudes from the housing, and wherein the holding sleeve is provided with an opening communicated with the receiving chamber; a clamping member provided in the opening and detachably connected with the holding sleeve; a ceramic sleeve provided within the receiving chamber; and fixing members provided at two ends of the holding sleeve and fixedly connected with the holding sleeve to limit the ceramic sleeve. The axes of holding sleeves are the axes thereof, which avoids multiple holding sleeves from deviating each other due to assembly errors, and ensures that the ceramic sleeve may float freely within the holding sleeve.

A lens clamping device, relating to the field of optical communication devices, comprises: a base; a sliding mechanism slidably connected with the base and movable relative to the base along a first direction; a transmission mechanism connected with the sliding mechanism and having a first and a second clamping member capable of relatively away from and close to each other along a second direction perpendicular to the first direction; and a suction nozzle fixedly connected to one end of the sliding mechanism along the first direction and used for sucking a lens; wherein the suction nozzle is between the first and second clamping member which are relatively close to each other to limit the displacement of the lens in the second direction. The lens clamping device improves the reliability of picking up the lens by means of limit in two directions.

Disclosed are an APR protection method and device, and a computer storage medium. A preamplifier PA of each of two optical amplifier units at two ends of a transmission line is connected to a booster amplifier BA of the other amplifier unit by an optical fiber. The method comprises: when a reception state of PA of at least one of two amplifier units is a loss of signal state and a switch chip of said amplifier unit detects a link interruption signal, activating an APR protection state of said amplifier unit which is to turn off BA output of said amplifier unit; when the switch chip of at least one of two amplifier units detects a link conduction signal, deactivating the APR protection state of the present amplifier unit to restore a state of BA of said amplifier unit to a state before the APR protection state is activated.