Optical module development direction-Miniaturization

The miniaturization of optical transceiver as fiber access network core devices to promote the development of the trunk optical transmission system to lower costs, makes the configuration of the optical network is more complete and reasonable.

The optical transceiver module composed of optoelectronic devices, functional circuits, and optical interface structure, optoelectronic devices, including transmitting and receiving two parts, the transmitter LED, VCSEL, FPLD, DFBLD several light; receiver section includes a PIN and APD photodetector.

Features LED LightEmitting850 type of operating wavelength (nm), low-cost, general performance, can only be used for low-speed transmission around 100M, FPFabry-PerotLaser1310 general, performance is acceptable and can be used in distance high-speed transmission DFBDistribution-FeedbackLeaser1550 higher cost, can provide higher power for long distance transmission, VCSELVericalCavitySufaceEmittingLaser850 low production costs, short-range transmission for high-speed high, EMLElectro-AbsorptionModulatorwithLaser1310 costs, and the need to provide a higher voltage, but the transmission 100KM above from 1550 MZMach-ZenderModulator, with little complex process and the optical communications market increasingly competitive, communications devices require smaller and smaller, the interface board contains the interface increasing density. Laser and detector separation optical module has been difficult to adapt to the requirements of modern communications equipment. In order to adapt to the requirements of communications equipment, optical devices, optical modules are highly integrated small form factor. The highly integrated optical module so that users no need to deal with high-speed analog optical signal to shorten the R & D and production cycle, reducing the vitality of procurement categories, reduce production costs, so more and more favored by the equipment manufacturer.

At present, optical transceiver modules, optoelectronic devices, encapsulated by the larger size of the dual in-line form of the development of a coaxial package-based; optical interface structure ST, FC developed to the SC and the smaller size of the LC MT-RJ type connector form, the corresponding optical transceiver module package from the development of metal packaging to plastic packaging, by the separation of the single interface module to the dual interface transceiver module. Double row pin-and package-line by 20 feet, 16 feet separation module to a single row of 9 feet (1X9), double nine feet (2X9) and the double of 10 feet and double 20 foot transceiver module . The SFF (Small Form Factor) package optical modules using advanced precision optics and integrated circuit technology, size is only an ordinary duplex SC (1X9)-type optical transceiver module is half in the same space, doubling the number of optical ports can be increase the line port density, lower system cost per port. SFF package module using copper-based network similar to MT-RJ interface, the size of the common computer network copper interfaces, existing copper-based network equipment to the transition to higher speed fiber optic network to meet the rapid growth of network bandwidth requirements.

Small package optical transceiver module with its appearance of a small package that advantage, so that the optical interface of network equipment doubling the number of the rate of single-port Gigabit order of magnitude, and able to meet the rapid growth of the network bandwidth requirements of INTERNET era. It can be said that the small package optical transceiver module represents the trend of the development of a new generation of optical communication is the cornerstone of next-generation high-speed network. Abroad, the major optical module vendors have produced various for different rate and distance of the small package optical modules, some domestic suppliers of optical components also start R & D and production and the rate SFF transceiver module.

This information from FiberStore