Accelink Technologies Co., Ltd.

Wuhan Telecommunication Devices Company

Fiberhome Telecommunication Technologies Co., Ltd

Wuhan Telecommunications Devices Co., Ltd.

Fiberhome Telecommunications Technologies Co., Ltd.

Shiyu Li

Wei Chen

Di Zhang

Weidong Ma

Yanfeng Fu

Xuesheng Tang

Shenglei Hu

Wenyong Luo

Tao Zhang

Liping Sun

Qianggao Hu

Kun Qian

Yongan Fu

Yi Tang

Peng Hu

Chenggang Liu

Qi Mo

Dongxiang Wang

Yili Ke

Cheng Du

Fuming Hu

Rong Dan

Kun Du

Daoyu Lei

Wenjun Huang

Danhua Huang

Haiming Hu

The present invention provides a wavelength division multiplexing/demultiplexing optical transceiving assembly based on a diffraction grating, which is an uplink optical emitting unit and a downlink optical receiving unit that comprise a laser chip array, a light receiving detector array, a first fast axis collimating lens, a second fast axis collimating lens, a first slow axis collimating lens, a diffraction grating, a slow axis focusing lens, a second slow axis collimating lens, an optical isolator, a coupling output lens, a coupling input lens, a coupling outputting optical fiber and a coupling inputting optical fiber. The wavelength division multiplexing/demultiplexing optical transceiving assembly solves the technical problem of sharing a diffraction grating to realize a wavelength division multiplexing/demultiplexing function, achieves the beneficial effects of better diffraction grating filtering property, smaller light path coupling loss and insertion loss correlative with wavelength, larger independent optical element sizes, and simpler assembly process, and is more suitable for manufacturing a multi-channel wavelength division multiplexing/demultiplexing optical transceiving assembly.

Wavelength division multiplexing/demultiplexing optical transceiving assembly based on diffraction grating

A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.

Wavelength-tunable external-cavity laser and adjustable light emission module

Provided are a high-efficiency parallel-beam laser optical fiber drawing method and optical fiber, the method including the steps of: S: providing base planes on the side surfaces of both a gain optical fiber preform and a pump optical fiber preform, inwardly processing the base plane of the gain optical fiber preform to make a plurality of ribs protrude, and inwardly providing a plurality of grooves on the base plane of the pump optical fiber preform; S: embedding the ribs into the grooves, tapering and fixing one end of the combination of the ribs and the grooves to form a parallel-beam laser optical fiber preform; S: drawing the parallel-beam laser optical fiber preform into parallel-beam laser optical fibers. The process has high repeatability, and the obtained parallel-beam laser achieves peelability of pump optical fibers in a set area, thus facilitating multi-point pump light injection of parallel-beam laser optical fibers.

High-efficiency parallel-beam laser optical fibre drawing method and optical fibre

A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (), a quartz glass internal cladding (), a quartz glass outer cladding (), and a coating (). The quartz glass internal cladding (), the quartz glass outer cladding (), and the coating () are sequentially coated on the outer surface of the fiber core (). The fiber core () is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core () is a graded refractive index, and the section parameter a thereof is 1&#x2266;&#x3b1;&#x2266;3. The appearance of the quartz glass inner cladding () is regular multi-prism shaped. The large mode field active optical fiber provides an approximate single mode output, increases the capacity of bearing the laser power for the active optical fiber, increases the quality of the light beam of the output laser, avoids the problem that there is a hollow ring in the output laser, increases the reliability of the high power fiber laser, increases the utilization efficiency of the raw materials, and reduces the manufacture cost.

Large mode field active optical fiber and manufacture method thereof

A coaxial opto-electronic device used for SFF (Small Form Factor) and SFP (Small Form-Factor pluggable) opto-electronic transceiver module comprises an opto-electronic TO CAN () having a cap border () at one end, a metal tube () disposed around the opto-electronic TO CAN (), and an isolation ring () interposed between the end face of the metal tube () and the cap border (). The coaxial opto-electronic device allows the device's metal case ground to be insulated from the inner data ground, and at the same time, the device outer form is small enough and the size of inner part thereof is enlarged.

Coaxial opto-electronic device having small form factor insulating structure

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Wuhan, China

Shiyu Li