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.
摘要:
The optical fibers disclosed is a single mode optical fiber comprising a core region and a cladding region surrounding and directly adjacent to the core region. The core region can have a radius r1 in a range from 3 μm to 7 μm and a relative refractive index profile Δ1 having a maximum relative refractive index Δ1max in the range from 0.25% to 0.50%. The cladding region can include a first outer cladding region and a second outer cladding region surrounding and directly adjacent to the first outer cladding region. The first outer cladding region can have a radius r4a. The second outer cladding region can have a radius r4b less than or equal to 45 μm and comprising silica based glass doped with titania.
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.
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:
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:
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:
The optical fiber disclosed has a glass fiber including a core and a cladding. The core comprises silica glass doped with chlorine and having an outer radius r1 between 3.0 microns and 10.0 microns. The cladding has an outer radius r4 not less than 50.0 microns. A primary coating surrounding the cladding has a thickness (r5 - r4) between 5.0 microns and 20.0 microns, and an in situ modulus less than 0.30 MPa. A secondary coating surrounding the primary coating has a thickness (r6 - r5) between 8.0 microns and 30.0 microns, a Young's modulus greater than 1500 MPa, and a normalized puncture load greater than 3.6 x 10-3 g/micron2. The optical fiber has a 22-meter cable cutoff wavelength less than 1530 nm, an attenuation at 1550 nm of less than 0.17 dB/km, and a bending loss at 1550 nm of less than 3.0 dB/turn.
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.
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..
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.