Mutual, optical modulation manner and the system null in the wavelength stationary type FPLD due to the injection of the broadband illuminant which uses FPLD which was injected

摘要

This invention the optical modulation method and the optical modulation system of the wave length stationary type FP LD due to the fill of the wide band illuminant (BLS) which uses the mutual fill of the Fabry Perot laser diode (FP LD) regards. More in detail, as for this invention, it regards the new irregularity technology which mounts the wave length stationary type FP LD which can be used with the optical network which is based on wavelength division multiplex passive optical network (WDM PON) as the economic illuminant. According to this invention, between two FP LD the optical fiber which is used for BLS, and the optical transmission which are constructed by mutual fill, light from the plural oscillation modes of BLS consists of n through 1AWG and 1AWG which the filter are done in the group which n which outputs the light where the wave length which is divided is locked the encoder which is provided in the transmission edge of the member who is ahead the output from FP LD and 1AWG is transmitted, through 1AWG, the circulator and the WDM signal from 1AWG which output the light which is input n 2AWG which is multiplexed conversely in the group which consists of, andThe optical modulation system which includes the decoder which is provided in the reception edge which is ahead the output from 2AWG is transmitted is proposed. Therefore, as for this invention, low it makes that the economic illuminant is offered by mounting the wave length stationary type FP LD due to the fill of BLS of cost, with the one for WDM PON member possible.