| 摘要 |
<p>An optical modulator (10) includes a magnetic ferrite single crystal (12), an optical source (22), a photoreceptor system (34, 36) and an analyzer (30). The magnetic ferrite single crystal (12) has a transducer (14) mounted thereon and arranged to receive a microwave. The microwave is modulated by a signal having a frequency lower than the microwave. The optical source (22) is arranged such that light emitted from the optical source (22) is introduced to the magnetic garnet single crystal (12) and modulated by the microwave applied to the transducer (14). The photoreceptor system (34, 36) is arranged so as to receive the modulated light that is emitted from the magnetic ferrite single crystal. The analyzer (30) is provided between the magnetic ferrite single crystal (12) and the photoreceptor system (34, 36), and the analyzer (30) is arranged such that a rotation angle of the analyzer (30) about an optical axis thereof is shifted by an angle in the range of about 40 degrees to about 50 degrees from an extinct position at which an amount of direct-current light transmitted through analyzer (30) is minimized. <IMAGE></p> |
