OPTICAL PHASE MODULATOR
申请(专利)号： JP19900148294
专利号： JPH0439618A 主分类号： G01C19/72
申请权利人： MATSUSHITA
ELECTRIC IND CO LTD 公开国代码： JP 优先权国家： JP
摘 要：
PURPOSE:To obtain a flat optical phase modulating characteristics by forming electrodes on the inside and outside of a cylindrical piezoelectric vibrator having no symmetrical axis or symmetrical plane and winding up an optical fiber around the vibrator. CONSTITUTION:The cylindrical piezoelectric vibrator 11 whose outline is a cylinder has a cylindrical cavity 12 having a center axis different from the center axis of the outline cylinder and the optical fiber 13 is wound around the outer periphery of the cylinder. The vibrator 11 in the length direction is cut off by a plane not intersecting with the center axis of the outline cylinder at right angles. The electrodes 14, 15 are formed on the
inside and outside of the vibrator 11, and when oscillation voltage is impressed between the electrodes 14, 15, the vibrator 11 vibrates in the diameter
direction. In this case, the center axis of the inside cylindrical cavity 12 is eccentric and the thickness of the cylinder is not
申请日： 1990-06-05 公开公告日： 1992-02-10
分类号： G01C19/72;
G02B26/06; G02F1/01 发明设计人： TAKEUCHI
YOSHINORI; IDOTA TAKESHI 申请国代码： JP
优先权： 19900605 JP
14829490
摘 要 附 图：
uniform. Also the wall thickness of the vibrator 11 in the length direction is not uniform, preventing the generation of remarkable resonance in an oscillation mode. Thus, the flat frequency characteristics of optical phase modulation can be obtained. 主权项：
权 利 要 求 说 明 书
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OPTICAL PHASE MODULATOR
