Fujitsu visual spare part Co., Ltd. has been already by making the future generation of 100 Gbit/s mere network become possible low movement voltage and introduce a small-scale adverbial phrase- QPSK LN modulating device. This kind of product has high dependability to make, it becomes possible to build commercial system in low consumption and dominant transmission quality.

In recent years, the enlargement of the new service, for example the calculation flowing and online cloud, have already caused the dramatic increase of data communication. When improving in data transmission amount of the communication network, already quite a lot of momentums of increase with developing activity 100 Gbit/s mere network of research related to making monobasic commercialization. When a lot of the prominent coding method under deliberation are only transmitted, it is becoming essential to its high tolerance of nodal signal distortion sending the fiber and taking over of cause that adverbial phrase – QPSK sends technology, its dominant bandwidth efficiency, make and not increase symbol rate in transport ability with its increase. Moreover, this technology of sending is being enabled and standardized by visual Internetworking forum.

Visual construction of network system to require commerce, have, increase to close day by day, low movement voltage and demand for the wide bandwidth optics modulating device. However, make a main inclusive modulating device of challenge that the ability is not an adverbial phrase – QPSK, some intricate structure because of them.

Fujitsu’s visual component development technology overcomes this challenge, and has already succeeded in producing a small-scale adverbial phrase – QPSK LN modulating device and is for the visual network system of the commerce to use with the low movement voltage.

Have adverbial phrase – QPSK small-scale LN person who modulate of circuit modulate the total mark inside the optical circuit in one single packagehe adverbial phrase – QPSK, the light beam combiner of polarization is combined inside an single parcel, makes small-scale LN modulating device which is suitable for 178 millimetres of x 127 millimetres of launchers responders.

In order to produce the high-quality adverbial phrase – QPSK signal, the company expands the visual bandwidth of the modulating device. In order to convey the adverbial phrase – QPSK signal with the transmission speed of data of 100 Gbit/s, the modulation rate of 25 Gbit/s is required. Make 40 Gbit/s LN arbitrator that commercialized utilize in the past by using technology to similar to that, the wide bandwidth of one 25 GHz is obtained. In addition, this LN modulating device low movement voltage with the biggest 3.5 V, make it for the commercial system to use as a real optics modulating device.

In addition, through confirm many position of RF one side of person who modulate approach entering son, ending of line, notably mutual, adverbial phrase – QPSK signal can be produced and has not needed adjustment so that the time delay among electric signal on the sport circuit. In addition, the single entering the line end son and direct current prejudice signal of the modulating device to control through employing for RF signal described above, the requirements for electric circuit of a piece of outside of combining two kinds of signals are dispelled.

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