Optical sub-assembly and telescopic-shaped core cylinder module thereof

Abstract

An optical sub-assembly comprising a filtering optical module, a light emitting module having a light emitting device (LED), at least a light receiving module, at least one wavelength filter, a fibre optic connector and cable having a fiber optic, and a telescopic-shaped core cylinder module having at least two tapered diameter core portions and at least a gel coating layer over an inner surface thereof is provided. A first optical signal of the light emitting device is directed to the tapered diameter core portions, the at least one wavelength filter, and onto the fibre optic. The telescopic-shaped core cylinder module is configured to perform isolation on optical signals via the tapered diameter core portions, taperedly shrinking the area for reflected light to impinge on the LED, and the at least a gel coating layer absorbing wavelengths of the optical signals reflected in and to the tapered diameter core portions.

1 : A telescopic-shaped core cylinder module of an optical sub-assembly, comprising:
 a cylinder core having at least two tapered diameter core portions comprising a first and second core portion, wherein a diameter of the first core portion is larger than a diameter of a second core portion,   wherein, the telescopic-shaped core cylinder module is configured to perform isolation on optical signals via the tapered diameter core portions, taperedly shrinking the area for reflected light to impinge on a light source emitting optical signals directed through the first and second core portions.   
     
     
         2 : The telescopic-shaped core cylinder module of  claim 1 , wherein the shapes of the first and second core portions are conical, respectively. 
     
     
         3 : The telescopic-shaped core cylinder module of  claim 1 , further comprising:
 a first transitional core portion having a cylindrical shape extending from a first end of the first core portion, wherein a diameter of the first transitional core portion is larger than the diameter of the first core portion; and   a first guiding core portion having a conical shape radially expanding outwardly from the first transitional core portion opposite to the first core portion.   
     
     
         4 . (canceled) 
     
     
         5 : The telescopic-shaped core cylinder module of  claim 1 , further comprising:
 a first inner guiding core portion having a conical shape positioned between the first and second core portions; and   a second inner guiding core portion having a conical shape radially expanding outwardly from the second core portion opposite to the first inner guiding core portion.   
     
     
         6 : The telescopic-shaped core cylinder module of  claim 5 , further comprising:
 a second transitional core portion having a cylindrical shape extending from the second inner guiding core portion opposite to the second core portion, wherein a diameter of the second transitional core portion is smaller than the diameter of the second core portion; and   a second guiding core portion having a conical shape radially expanding outwardly from the second transitional core portion opposite to the second inner guiding core portion.   
     
     
         7 : The telescopic-shaped core cylinder module of  claim 1 , wherein the amount of the at least two tapered diameter core portions is three. 
     
     
         8 : The telescopic-shaped core cylinder module of  claim 1 , wherein the amount of the at least two tapered diameter core portions is greater than three. 
     
     
         9 . (canceled) 
     
     
         10 : The telescopic-shaped core cylinder module of  claim 3 , further comprising at least a gel coating layer over an inner surface thereof, absorbing wavelengths of optical signals reflected in and to the tapered diameter core portions. 
     
     
         11 : The telescopic-shaped core cylinder module of  claim 10 , wherein the difference in the size of the diameters of the first transitional core portion and first core portion is configured to contain excess gel from the at least a gel coating layer over the inner surface areas of the telescopic-shaped core cylinder module following application thereto. 
     
     
         12 : The telescopic-shaped core cylinder module of  claim 1 , wherein a material of the telescopic-shaped core cylinder module is stainless steel. 
     
     
         13 : A telescopic-shaped core cylinder module, comprising:
 a cylinder core having at least two tapered diameter core portions comprising a first and second core portion, wherein a diameter of the first core portion is larger than a diameter of a second core portion,   wherein, the telescopic-shaped core cylinder module is configured to perform isolation on optical signals via the tapered diameter core portions, taperedly shrinking the area for reflected light to impinge on a light source emitting optical signals directed through the first and second core portions.   
     
     
         14 : The telescopic-shaped core cylinder module of  claim 13 , wherein the shapes of the first and second core portions are conical, respectively. 
     
     
         15 : The telescopic-shaped core cylinder module of  claim 13 , further comprising:
 a first transitional core portion having a cylindrical shape extending from a first end of the first core portion, wherein a diameter of the first transitional core portion is larger than the diameter of the first core portion; and   a first guiding core portion having a conical shape radially expanding outwardly from the first transitional core portion opposite to the first core portion.   
     
     
         16 : The telescopic-shaped core cylinder module of  claim 13 , further comprising:
 a first inner guiding core portion having a conical shape positioned between the first and second core portions; and   a second inner guiding core portion having a conical shape radially expanding outwardly from the second core portion opposite to the first inner guiding core portion.   
     
     
         17 : The telescopic-shaped core cylinder module of  claim 16 , further comprising:
 a second transitional core portion having a cylindrical shape extending from the second inner guiding core portion opposite to the second core portion, wherein a diameter of the second transitional core portion is smaller than the diameter of the second core portion; and   a second guiding core portion having a conical shape radially expanding outwardly from the second transitional core portion opposite to the second inner guiding core portion.   
     
     
         18 : The telescopic-shaped core cylinder module of  claim 13 , wherein the amount of the at least two tapered diameter core portions is three. 
     
     
         19 : The telescopic-shaped core cylinder module of  claim 13 , wherein the amount of the at least two tapered diameter core portions is greater than three. 
     
     
         20 : The telescopic-shaped core cylinder module of  claim 15 , further comprising at least a gel coating layer over an inner surface thereof, absorbing wavelengths of optical signals reflected in and to the tapered diameter core portions. 
     
     
         21 : The telescopic-shaped core cylinder module of  claim 20 , wherein the difference in the size of the diameters of the first transitional core portion and first core portion is configured to contain excess gel from the at least a gel coating layer over the inner surface areas of the telescopic-shaped core cylinder module following application thereto. 
     
     
         22 : The telescopic-shaped core cylinder module of  claim 13 , wherein a material of the telescopic-shaped core cylinder module is stainless steel.