Abstract A method is disclosed of forming an optical waveguide preform, the method comprising the steps of providing a tube of cladding glass (142), disposing centrally within said tube (142) a first glass rod having an axially disposed core region (143) surrounded by a layer of cladding glass (144), disposing a first pair of glass rods (145) diametrically with respect to the central rod within said tube (142), said first pair of rods (145) being formed of a glass having a temperature coeffinient of expansion different from that of said cladding glass (142), and disposing a plurality of rods (147) of cladding glass in at least some of the interstices between said centrally disposed rod, said first pair of rods (145) and said tube (142).
A method of forming an optical waveguide preform, comprising the steps of providing a tube of cladding glass (142), disposing centrally within said tube (142) a first glass rod having an axially disposed core region (143) surrounded by a layer of cladding glass (144), disposing a first pair of glass rods (145) diametrically with respect to the central rod within said tube (142), said first pair of rods (145) being formed of a glass having a temperature coefficient of expansion different from that of said cladding glass (142), and disposinge a plurality of rods (147) of cladding glass in at least some of the interstices between said centrally disposed rod, said first pair of rods (145) and said tube (142).
Claim 2
Independent Claim
120 words
A method of forming an optical waveguide preform, comprising the steps of providing a tube of cladding glass (142), disposing centrally within said tube (142) a first glass rod having an axially disposed core region (143) surrounded by a layer of cladding glass (144), disposing a first pair of glass rods (145) diametrically with respect to the central rod within said tube (142), said first pair of rods (145) being formed of a glass having a temperature coefficient of expansion different from that of said cladding glass (142), and disposinge a plurality of rods (147) of cladding glass in at least some of the interstices between said centrally disposed rod, said first pair of rods (145) and said tube (142).
Claim 3
Dependent Claim
58 words
A method in accordance with claim 2, further comprising the steps of disposing within said tube (142) on opposite sides of said first rod and orthogonally disposed with respect to said first pair of glass rods (145) a second pair of glass rods (146) having physical characteristics different from those of said first pair of glass rods (145).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.