Loading patent…
AssigneeFujitsu Limited
InventorsYuji Tochio, Kazuyuki Mori, Tetsuji Yamabana, Ichiro Watanabe, Yuji Ishii
Estimating the term…
An object of the invention is to provide a control apparatus and a control method having a simple constitution, which can stably perform switching of optical path in an optical signal exchanger, while suppressing an influence on a control due to the mechanical resonance of tilt mirrors. To this end, the control apparatus of the optical signal exchanger is constituted such that in an optical signal exchanger of three-dimensional type using one set of MEMS mirror arrays, each having a plurality of tilt mirrors arranged on a plane, each tilt mirror having a reflecting surface an angle of which is controllable, when the angle of the MEMS mirror on the optical path is feedback controlled by detecting power of an optical signal output from a specific position, a resonance component removing section that removes a resonance frequency component included in a control signal is shared corresponding to a pair of driving electrodes arranged in a coaxial direction of the MEMS mirror. As a result, the influence on the feedback control by a resonance action of the MEMS mirror can be reduced, while suppressing an increase in circuit size.
A control apparatus of an optical signal exchanger which includes a first mirror array and a second mirror array, each having a plurality of tilt mirrors arranged on a plane, each tilt mirror having a reflecting surface at an angle which is controllable, an input optical signal being sequentially reflected by said first and second mirror arrays to output at a specific position, at which power of an optical signal output at said specific position is detected, and feedback to control an angle of at least one of the reflecting surfaces of the tilt mirrors of said first and second mirror arrays, which have reflected the input optical signal, said control apparatus comprising:
A control method of an optical signal exchanger which includes a first mirror array and a second mirror array, each having a plurality of tilt mirrors arranged on a plane, each tilt mirror having a reflecting surface at an angle which is controllable, an input optical signal being sequentially reflected by said first and second mirror arrays to output at a specific position, at which power of an optical signal output at said specific position is detected, and feedback to control the angle of at least one of the reflecting surfaces of the tilt mirrors of said first and second mirror array, which have reflected the input optical signal on said first and second mirror arrays, comprising:
A control apparatus of an optical signal exchanger which includes a first mirror array and a second mirror array, each having a plurality of tilt mirrors arranged on a plane, each tilt mirror having a reflecting surface at an angle, and the first and second mirror arrays sequentially reflecting an input optical signal to output at a specific position, where power of an output optical signal, and the angle of at least one of the reflecting surfaces of the tilt mirrors that reflected the input signal, being feedback controlled based on a detection result, by providing a feedback control signal to one of a pair of driving electrodes that change the angle of the at least one of the reflecting surfaces of the tilt mirrors, the control apparatus comprising:
Dependencies are inferred from the claim text.