公开(公告)号：US20150349485A1

公开(公告)日：2015-12-03

申请号：US14653386

申请日：2013-12-19

Applicant: FAZ TECHNOLOGY LIMITED

Inventor： Ibrahim Selwan ,  John O'Dowd ,  Tom Farrell ,  Martin Farnan

IPC: H01S3/13 ,  G01D18/00 ,  G01D5/26

CPC classification number: H01S5/068 ,  G01D5/268 ,  G01D18/00 ,  H01S3/1303 ,  H01S5/0021 ,  H01S5/06804 ,  H01S5/06817 ,  H01S5/06821 ,  H01S5/0687 ,  H01S5/1092

Abstract: The invention provides a system and a method for wavelength referencing and polarization mitigation. An optical wavelength tunable laser source is swept in a number of contiguous, overlapping sweep segments. A coarse reference wavelength section produces a reference signal that defines at least one absolute wavelength within a sweep segment. A fine wavelength reference section produces a periodic wavelength reference signal that defines a plurality of equidistant wavelengths within each sweep segment with an indeterminate offset relative to the absolute wavelength(s) of the coarse reference wavelength section. The free spectral range of the fine wavelength reference section is smaller than the spacing between subsequent absolute reference wavelengths of the coarse reference wavelength section. This arrangement allows reducing the minimum required overlap between contiguous sweep segments.

Abstract translation: 本发明提供了一种用于波长参考和极化减轻的系统和方法。 光波长可调激光源扫描在多个连续的，重叠的扫描段中。 粗略参考波长部分产生定义扫描段内的至少一个绝对波长的参考信号。 精细波长参考部分产生周期波长参考信号，该周期波长参考信号在每个扫描段内定义多个等距波长，相对于粗略参考波长部分的绝对波长具有不确定的偏移。 精细波长参考部分的自由光谱范围小于粗参考波长部分的后续绝对参考波长之间的间隔。 这种布置允许减少连续扫掠段之间所需的最小重叠。

公开(公告)号：US09823125B2

公开(公告)日：2017-11-21

申请号：US14419818

申请日：2013-08-07

Applicant: FAZ TECHNOLOGY LIMITED

Inventor： Selwan Ibrahim ,  John O'Dowd ,  Martin Farnan ,  Roger Maher ,  Tom Farrell ,  John Dunne

IPC: G01J1/42 ,  G01J3/02 ,  H01S5/0687 ,  G01K11/32 ,  G01B11/16 ,  G01L1/24 ,  G01J3/18 ,  G01J3/45 ,  G01D5/353 ,  H01S5/00 ,  H01S5/06 ,  H01S5/12

CPC classification number: G01J3/027 ,  G01B11/18 ,  G01D5/35335 ,  G01J3/1895 ,  G01J3/45 ,  G01K11/3206 ,  G01L1/246 ,  H01S5/0014 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/1209

Abstract: The invention provides a dynamically swept tunable laser system and method for measuring sensor characteristics obtained from an array of optical sensors comprising means for dividing the total wavelength sweep of the laser into different regions in any particular order where each region contains single or multiple contiguous sweep segments and where each sweep segment is referenced by a start and a stop reference and can have different lengths compared to the other sweep segments. The sensor characteristics are determined from each region swept by the tunable laser. The invention provides for the tunable laser to be adapted to operate in a quasi-continuous mode to select segments in any order. The relative sweep rates of regions can be changed such that some regions can be swept more times than other regions.

公开(公告)号：US09287680B2

公开(公告)日：2016-03-15

申请号：US14653386

申请日：2013-12-19

Applicant: FAZ TECHNOLOGY LIMITED

Inventor： Ibrahim Selwan ,  John O'Dowd ,  Tom Farrell ,  Martin Farnan ,  Roger Maher

IPC: H01S3/10 ,  H01S5/068 ,  H01S3/13 ,  G01D5/26 ,  G01D18/00 ,  H01S5/0687 ,  H01S5/00 ,  H01S5/10

CPC classification number: H01S5/068 ,  G01D5/268 ,  G01D18/00 ,  H01S3/1303 ,  H01S5/0021 ,  H01S5/06804 ,  H01S5/06817 ,  H01S5/06821 ,  H01S5/0687 ,  H01S5/1092

Abstract: The invention provides a system and a method for wavelength referencing and polarization mitigation. An optical wavelength tunable laser source is swept in a number of contiguous, overlapping sweep segments. A coarse reference wavelength section produces a reference signal that defines at least one absolute wavelength within a sweep segment. A fine wavelength reference section produces a periodic wavelength reference signal that defines a plurality of equidistant wavelengths within each sweep segment with an indeterminate offset relative to the absolute wavelength(s) of the coarse reference wavelength section. The free spectral range of the fine wavelength reference section is smaller than the spacing between subsequent absolute reference wavelengths of the coarse reference wavelength section. This arrangement allows reducing the minimum required overlap between contiguous sweep segments.

Abstract translation: 本发明提供了一种用于波长参考和极化减轻的系统和方法。 光波长可调激光源扫描在多个连续的，重叠的扫描段中。 粗略参考波长部分产生定义扫描段内的至少一个绝对波长的参考信号。 精细波长参考部分产生周期波长参考信号，该周期波长参考信号在每个扫描段内定义多个等距波长，相对于粗略参考波长部分的绝对波长具有不确定的偏移。 精细波长参考部分的自由光谱范围小于粗参考波长部分的后续绝对参考波长之间的间隔。 这种布置允许减少连续扫掠段之间所需的最小重叠。