As a kind of accessories and material, optical fiber modules have always been one of the most important devices in optical transmission equipment. Therefore, choosing a good optical fiber module is very important for the entire fiber optic equipment, and even the optical fiber system. So, what are the development trends of optical fiber modules?
As the core device of the optical fiber access network, the optical transceiver module has promoted the development of the trunk optical transmission system to the direction of low cost, making the configuration of the optical network more complete and reasonable.
Traditional optical fiber modules with separate lasers and detectors have been difficult to meet the requirements of modern communication equipment. To meet the requirements of communication equipment for optical devices, optical fiber modules are developing towards highly integrated small packages.
The volume of communication equipment is getting smaller and smaller, and the density of interfaces on the interface board is increasing, requiring optoelectronic devices to develop towards the direction of low cost and low power consumption.
At present, optical devices generally adopt hybrid integrated technology and hermetic packaging technology. The next step will be non-hermetic packaging, which needs to rely on passive optical coupling (non-X-Y-Z direction adjustment) and other technologies. In this way, the degree of automatic production can be improved further and costs will be reduced.
In particular, the preamplifier that processes high-speed, small-signal, and high-gain uses GaAs technology. The development of SiGe technology enables the yield and the manufacturing cost of such chips to be well controlled, while further reducing power consumption.
People demand more and more information and a faster and faster information transfer rate. As the main pillar of modern information exchange, processing, and transmission, optical communication networks have been constantly developing towards ultra-high frequency, ultra-high-speed, and ultra-large capacity. The higher the rate and the larger the capacity, the smaller the cost of transmitting each information.
In terms of long-distance and large capacity, the current hot spots are 10Gbit/s and 40Gbit/s. From the current stage of circuit technology, 40Gbit/s is close to the limit of "electronic bottleneck". No matter how high the rate is, the problems caused by signal loss, power dissipation, electromagnetic radiation (interference), and impedance matching are hard to solve. Even if it is solved, it will be very costly.
Another development direction of the optical fiber module is long-distance. Nowadays, the laying distance of optical networks is getting farther and farther, which requires remote transceivers to match them. A typical remote transceiver signal can transmit at least 100 kilometers without amplification. The main purpose is to reduce the cost of optical communication by eliminating expensive optical amplifiers.
Because the optical fiber module is hot-swappable, network managers can upgrade and expand the system without shutting down the network, which will have no impact on online users. The hot-swap performance also simplifies the overall maintenance work and enables end-users to better manage their transceiver optical fiber modules.
At the same time, due to this hot-swap performance, the optical fiber module enables network managers to make overall planning for the cost of sending and receiving, link distances, and all network topologies according to network upgrade requirements, without the need to replace all the system boards.