公开(公告)号：EP0828169A2

公开(公告)日：1998-03-11

申请号：EP97306798.6

申请日：1997-09-02

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Fleming, Debra Anne ,  Lemaire, Paul Joseph ,  Johnson, David Wilfred, Jr.

IPC: G02B6/16

CPC classification number: G02B6/0218 ,  G02B6/4238 ,  G02B6/4239

Abstract: Conventional optical gratings are relatively temperature sensitive. This sensitivity is generally undesirable but can be reduced or eliminated by attaching the grating to a support member (11) having a negative coefficient of thermal expansion. Exemplarily the member comprises Zr-tungstate and/or Hf-tungstate. The thermal expansion can be tailored by admixture of positive expansion coefficient material (e.g., Al 2 O 3 , SiO 2 ) to the negative expansion coefficient material (e.g., ZrW 2 O 8 ), or by a variety of other techniques.

Abstract translation: 物品包括在工作范围内的给定温度下具有折射率光栅的光纤（13），其具有长度和反射波长λ。 光纤被连接到支撑构件（11），该支撑构件具有选择的负的热膨胀系数，使得λ在工作温度范围内基本上与温度无关。