公开(公告)号：WO0237625A3

公开(公告)日：2002-09-26

申请号：PCT/US0147356

申请日：2001-11-06

Applicant: CIDRA CORP

Inventor： FERNALD MARK R ,  BAILEY TIMOTHY J ,  MILLER MATTHEW B ,  SULLIVAN JAMES M ,  DAVIS MICHAEL A ,  BRUCATO ROBERT N ,  PUTNAM MARTIN A ,  KRINGLEBOTN JON THOMAS ,  KERSEY ALAN D ,  SANDERS PAUL E

IPC: H01S3/063 ,  H01S3/067 ,  H01S3/08 ,  H01S3/1055

CPC classification number: H01S3/0675 ,  G02B6/022 ,  H01S3/0635 ,  H01S3/08009 ,  H01S3/1055

Abstract: A compression-tuned bragg grating-based laser includes a tunable optical element 20,600 which includes either an optical fiber 10 having at least one Bragg grating 12 impressed therein encased within and fused to at least a portion of a glass capillary tube 20 or a large diameter waveguide grating 600 having a core and a wide cladding. Light 14 is incident on the grating 12 and light 16 is reflected at a reflection wavelength lambda 1. The tunable element 20,600 is axially compressed which causes a shift in the reflection wavelength of the grating 12 without buckling the element. The shape of the element may be other geometries (e.g., a"dogbone" shape) and(or more than one grating or pair of gratings may be used and more than one fiber 10 or core 612 may be used. At least a portion of the element may be doped between a pair of gratings 150,152, to form a compression-tuned laser or the grating 12 or gratings 150,152 may be constructed as a tunable DFB laser. Also, the element 20 may have an inner tapered region 22 or tapered (or fluted) sections 27. The compression may be done by a PZT, stepper motor, hydraulic device or other actuator.

Abstract translation: 压缩调谐基于布拉格光栅的激光器包括可调谐光学元件20,600，其包括具有至少一个印刷在其中的布拉格光栅12的光纤10，该光栅10被包裹在玻璃毛细管20的至少一部分中并且被熔合到玻璃毛细管20的至少一部分上， 波导光栅600具有一个芯和一个宽的包层。 光14入射到光栅12上，并且光16以反射波长λ1被反射。可调元件20,600被轴向压缩，这引起光栅12的反射波长的偏移而不使元件屈曲。 元件的形状可以是其他几何形状（例如，“狗骨形”），并且（或者可以使用多于一个的光栅或光栅对，并且可以使用多于一个的光纤10或芯612.至少一部分的 该元件可以被掺杂在一对光栅150,152之间以形成压缩调谐激光器，或者光栅12或光栅150,152可以被构造为可调DFB激光器。而且，元件20可以具有内锥形区域22或锥形 或凹槽）部分27.压缩可以通过PZT，步进电机，液压装置或其他致动器完成。