Optical waveguides – Optical fiber waveguide with cladding – With graded index core or cladding
Reexamination Certificate
2008-04-07
2011-10-18
Ullah, Akm (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
With graded index core or cladding
C385S147000
Reexamination Certificate
active
08041172
ABSTRACT:
The present invention relates to a transmission optical fiber. The optical fiber includes, from its center to its periphery a central core, an intermediate cladding, and a depressed cladding. The optical fiber has an effective area (Seff) of at least about 120 μm2at a wavelength of 1550 nm and an effective cutoff wavelength (λCeff) of less than 1600 nm. The optical fiber has an effective area of more than 120 μm2with a cutoff wavelength limited to less than about 1600 nm without degradation of other optical parameters (e.g., attenuation losses and dispersion).
REFERENCES:
patent: 4852968 (1989-08-01), Reed
patent: 5781684 (1998-07-01), Liu
patent: 6483975 (2002-11-01), Hsu et al.
patent: 6658190 (2003-12-01), Hirano et al.
patent: 6665482 (2003-12-01), Kawasaki et al.
patent: 6904218 (2005-06-01), Sun et al.
patent: 7187833 (2007-03-01), Mishra
patent: 2005/0244120 (2005-11-01), Mishra
patent: 2009/0123122 (2009-05-01), Mukasa
patent: 2009/0252470 (2009-10-01), Mukasa
patent: 2010/0189400 (2010-07-01), Sillard et al.
patent: 1477831 (2004-11-01), None
patent: 1978383 (2008-10-01), None
European Search Report in counterpart European Application No. 08005802, dated Jul. 21, 2008 {All documents listed in Search Report previously cited in IDS filed on Jun. 17, 2008].
Tsukitani M. et al., “Ultra Low Nonlinearity Pure—Silica—Core Fiber with an Effective Area of 211 μm2and Transmission Loss of 0.159 dB/km”, M3.3.2, ECOC 2002, Sep. 9, 2002.
Ohsono, K., et al., “The Study of Ultra Large Effective Area Fiber & Mating Dispersion Slope Compensating Fiber for Dispersion Flattened Hybrid Optical Fiber DWDM Link”, IWCS 2002, Nov. 18, 2002, pp. 483-487.
Aikawa K., et al., “Single—Mode Optical Fiber with Effective Core Area larger than 160 μm2”, ECOC 1999, Sep. 26, 1999, p. 1-302.
French Search Report and Written Opinion in corresponding French Application Serial No. 0702545, dated Dec. 14, 2007.
Bigot-Astruc Marianne
De Montmorillon Louis-Anne
Molin Denis
Richard Simon
Sillard Pierre
Draka Comteq B.V.
Summa, Additon & Ashe, P.A.
Ullah Akm
LandOfFree
Transmission optical fiber having large effective area does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission optical fiber having large effective area, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission optical fiber having large effective area will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4288958