REDUCED DIAMETER MULTIMODE OPTICAL FIBERS WITH HIGH MECHANICAL RELIABILITY

    公开(公告)号:WO2021231085A1

    公开(公告)日:2021-11-18

    申请号:PCT/US2021/029518

    申请日:2021-04-28

    摘要: A disclosed multimode optical fiber (100) comprises a core (10) and a cladding (50) surrounding the core (10). The core (10) has an outer radius r1l in between 20pm and 30pm. The cladding (50) includes a first outer cladding region (56) having an outer radius r4a and a second outer cladding region (58) having an outer radius r4b less than or equal to 45μm. The second outer cladding region (58) comprises silica-based glass doped with titania. The optical fiber (100) further includes a primary coating (72) with an outer radius r5 less than or equal to 80μιτι, and a thickness (r5 - r4) less than or equal to 30μm. The optical fiber (100) further includes a secondary coating (74) with an outer radius r6 less than or equal to 100μm. The secondary coating (76) has a thickness (r6 - r5) less than or equal to 30μm, and a normalized puncture load greater than 3.6 x 10-3 g/micron2.

    SPECTRAL FILTERING FOR RAMAN SPECTROSCOPY
    3.
    发明申请

    公开(公告)号:WO2019157266A9

    公开(公告)日:2019-08-15

    申请号:PCT/US2019/017190

    申请日:2019-02-08

    IPC分类号: G01J3/02 G01J3/44

    摘要: A Raman spectroscopy system is provided. The spectroscopy system includes an optical switch including a first side having a pump inlet and a return outlet, and a second side having a plurality of pump outlets and a plurality of return inlets. The spectroscopy system includes at least one radiation source optically coupled to the pump inlet and a detector optically coupled to the return outlet. The spectroscopy system further includes a pump filter module optically coupled between the at least one radiation source and the pump outlets and a return filter module optically coupled between the detector and the return inlets. The spectroscopy system further includes a plurality of probes, each probe optically connected to at least one of the plurality of pump outlets by at least one excitation fiber and optically coupled to one of the return inlets by at least one emission fiber.

    COATED LOW LOSS MULTIMODE OPTICAL FIBER WITH SMALL DIAMETER
    4.
    发明申请
    COATED LOW LOSS MULTIMODE OPTICAL FIBER WITH SMALL DIAMETER 审中-公开
    带小直径涂层的低损耗多模光纤

    公开(公告)号:WO2018005580A1

    公开(公告)日:2018-01-04

    申请号:PCT/US2017/039623

    申请日:2017-06-28

    IPC分类号: G02B6/028

    摘要: A multi-purpose optical fiber with coating is provided. The optical fiber can function as a transmission fiber (120) or as a coupling fiber (140,145) for optical data links that features low coupling loss to silicon photonics lasers, VCSELs, single mode transmission fibers, multimode transmission fibers, and high speed receivers. The fiber includes a core, an optional inner cladding region, a depressed index cladding region, an outer cladding region, and a coating. The relative refractive index profile of the coupling fiber includes a small-radius core region with a profile and a depressed index cladding region that facilitates low bending loss and high bandwidth. The coating thickness and overall diameter of the fiber is small.

    摘要翻译: 提供带涂层的多用途光纤。 光纤可以用作传输光纤(120)或用作光学数据链路的耦合光纤(140,145),其特征在于对硅光子激光器,VCSEL,单模传输光纤,多模传输光纤和高速接收器具有低耦合损耗。 光纤包括芯部,可选的内部包层区域,凹陷的折射率包层区域,外部包层区域和涂层。 耦合光纤的相对折射率分布包括具有简化和小带宽折射损耗和高带宽的低折射率包层区域的小半径纤芯区域。 纤维的涂层厚度和整体直径很小。

    MULTIMODE OPTICAL FIBER AND OPTICAL BACKPLANE USING MULTIMODE OPTICAL FIBER
    5.
    发明申请
    MULTIMODE OPTICAL FIBER AND OPTICAL BACKPLANE USING MULTIMODE OPTICAL FIBER 审中-公开
    使用多模光纤的多模光纤和光背面

    公开(公告)号:WO2013023113A1

    公开(公告)日:2013-02-14

    申请号:PCT/US2012/050230

    申请日:2012-08-10

    IPC分类号: G02B6/036 G02B6/43

    摘要: A multimode optical fiber is provided. The fiber includes a graded index glass core having a diameter in the range of 24 microns to 40 microns, and a graded index having an alpha profile with an alpha coefficient less than 2.12 and a maximum relative refractive index in the range between 0.6 percent and 1.9 percent. The optical fiber further includes a cladding surrounding and in contact with the core. The cladding includes a depressed-index annular portion. The fiber has an overfilled bandwidth greater than 2.0 GHz-km at 1310 nm. An optical backplane system is also provided. The optical backplane system includes at least one transceiver, at least one optical connector, and a plurality of multimode optical fibers as defined above coupled to the at least one optical connector.

    摘要翻译: 提供多模光纤。 纤维包括直径在24微米至40微米范围内的分级折射率玻璃芯,以及具有α系数小于2.12的α分布的渐变折射率,在0.6%和1.9之间的范围内的最大相对折射率 百分。 光纤还包括围绕并与芯接触的包层。 包层包括凹陷折射率的环形部分。 光纤在1310nm处具有超过2.0GHz-km的过满的带宽。 还提供光背板系统。 光背板系统包括耦合到至少一个光连接器的至少一个收发器,至少一个光连接器和如上所定义的多个多模光纤。

    FEW-MODED OPTICAL FIBERS
    6.
    发明申请

    公开(公告)号:WO2012177332A1

    公开(公告)日:2012-12-27

    申请号:PCT/US2012/037186

    申请日:2012-05-10

    IPC分类号: G02B6/028

    摘要: Few moded optical fibers with small delay differences between the propagating modes are disclosed. In one embodiment, an optical fiber includes a glass core and a glass cladding surrounding and in direct contact with the glass core. The glass core may include a radius R1 from about 8 μm to about 13 μm; a graded refractive index profile with an alpha value between about 1.9 and 2.1 at a wavelength of 1550 nm; and a maximum relative refractive index Δ 1MAX from about 0.6% to about 0.95% relative to the glass cladding. The effective area of the LP01 mode at 1550 nm may be between 80 μm 2 and 105 μm 2 such that the core supports the propagation and transmission of an optical signal with X LP modes at a wavelength of 1550 nm, wherein X is an integer greater than 1 and less than 10. The glass cladding may include a maximum relative refractive index Δ 4MAX such that Δ 1MAX > Δ 4MAX . The optical fiber has DGD of less than or equal to about 150 ps/km at a wavelength of 1550 nm.

    摘要翻译: 公开了在传播模式之间具有小的延迟差的少量变形的光纤。 在一个实施例中,光纤包括围绕玻璃芯和与玻璃芯直接接触的玻璃外壳。 玻璃芯可包括约8μm至约13μm的半径R1; 在1550nm的波长下具有约1.9和2.1之间的α值的渐变折射率分布; 并且相对于玻璃包层的最大相对折射率λ1MAX为约0.6%至约0.95%。 在1550nm处的LP01模式的有效面积可以在80μm2和105μm2之间,使得核心支持在1550nm波长处的X LP模式的光信号的传播和传输,其中X是大于1的整数 并且小于10.玻璃包层可以包括最大相对折射率λ4MAX使得λ1MAX>≥4MAX。 在1550nm的波长下,光纤的DGD小于或等于约150ps / km。

    HIGH-DENSITY OPTICAL FIBER RIBBON AND RIBBON CABLE INTERCONNECTS EMPLOYING SMALL DIAMETER OPTICAL FIBERS

    公开(公告)号:WO2019240987A1

    公开(公告)日:2019-12-19

    申请号:PCT/US2019/035341

    申请日:2019-06-04

    IPC分类号: G02B6/036 G02B6/44

    摘要: A high-density optical fiber cable interconnect includes a fiber ribbon or fiber ribbon cable having at least one fiber ribbon and first and second ends. The fiber ribbon is formed from small diameter optical fibers arranged in at least one row, with each fiber having a glass section and a non-glass coating section surrounding the glass section. The diameter of the non-glass coating section can be less than 205 microns. A matrix layer encapsulates the small diameter optical fibers to define the fiber ribbon. A first optical connector terminates the first end of the fiber ribbon or fiber ribbon cable and has a first fiber pitch correspond to a standard optical fiber connector. A second optical connector terminates the second end of the fiber ribbon or fiber ribbon cable and has a second fiber pitch less than that of a standard optical fiber connector.

    SMALL DIAMETER LOW ATTENUATION OPTICAL FIBER

    公开(公告)号:WO2019212801A1

    公开(公告)日:2019-11-07

    申请号:PCT/US2019/028669

    申请日:2019-04-23

    IPC分类号: G02B6/02 G02B6/036

    摘要: An optical fiber comprising: a core having an outer radius r 1 ;a cladding having an outer radius r 4 ≤31 microns; a primary coating surrounding the cladding having an outer radius r 5 ,, a thickness t p > 10 microns, in situ modulus E P of 0. 5 MPa or less, and a spring constant χ P χP =2E P r 4 / t P ; and a secondary coating surrounding said primary coating, the secondary coating having an outer radius r 6 , a thickness t S =r 6 - r 5 , in situ modulus E S of 1200 MPa or greater; t S greater than 9.5 microns, wherein r 6 is 50 to 67.5 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a fiber cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn..

    SMALL DIAMETER LOW ATTENUATION OPTICAL FIBER
    10.
    发明申请

    公开(公告)号:WO2019212796A1

    公开(公告)日:2019-11-07

    申请号:PCT/US2019/028661

    申请日:2019-04-23

    IPC分类号: G02B6/02 G02B6/036

    摘要: An optical fiber comprising: a core having an outer radius r 1 ; a cladding having an outer radius r 4 5 and a thickness t p >8 microns, the primary coating having in situ modulus E p of 0.35 MPa or less and a spring constant χ p p =2E p r 4 /t p ; and a secondary coating surrounding said primary coating, the secondary coating having an outer radius r 6 , a thickness t s =r 6 -r 5 , in situ modulus E s of 1200 MPa or greater, wherein > 10 microns and r 6 ≤ 85 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn.