bids are invited for 24 core ofc ( single mode ) - ( i ) the fiber should be as per g.652d itu-t specification, rodent proof and fluid, chemicals should not be able to come in contact with the ofc and avoid corrosion / damage due to weather condition prevalent in some terrain ( ii ) operating wavelength 1310 / 1500nm ( double window ) ( iii ) attenuation at 1310nm at < 0.35 db / km maximum ( iv ) attenuation at 1550nm at < 0.21 db / km maximum ( v ) cut off wavelength 1260 nm ( vi ) fiber mode diameter 8.6-9.2 micrometer ( vii ) fiber cladding diameter 125 micrometer ( viii ) fiber protective coating diameter 250 micrometer with minimum coating thickness of 40 micrometer ( ix ) optical bandwidth of fiber 1.2 ghz / km minimum ( x ) each fiber should be individually colour coded ( xi ) chromatic dispersion parameter 3-term sellmeier fitting ( 1260 nm to 1460 nm ) ?0min 1300 nm?0max 1324 nms0min 0.073 ps / ( nm^2 × km ) s0max 0.092 ps / ( nm^2 × km ) , 48 core ofc ( single mode ) - ( i ) the fiber should be as per g.652d itu-t specification, rodent proof and fluid, chemicals should not be able to come in contact with the ofc and avoid corrosion / damage due to weather condition prevalent in some terrain ( ii ) operating wavelength 1310 / 1500nm ( double window ) ( iii ) attenuation at 1310nm at < 0.35 db / km maximum ( iv ) attenuation at 1550nm at < 0.21 db / km maximum ( v ) cut off wavelength 1260 nm ( vi ) fiber mode diameter 8.6-9.2 micrometer ( vii ) fiber cladding diameter 125 micrometer ( viii ) fiber protective coating diameter 250 micrometer with minimum coating thickness of 40 micrometer ( ix ) optical bandwidth of fiber 1.2 ghz / km minimum ( x ) each fiber should be individually colour coded ( xi ) chromatic dispersion parameter 3-term sellmeier fitting ( 1260 nm to 1460 nm ) ?0min 1300 nm?0max 1324 nms0min 0.073 ps / ( nm^2 × km ) s0max 0.092 ps / ( nm^2 × km ) , hdpe pipe - ( i ) 40 mm outer diameter and minimum wall thickness of 3.5 mm ( ii ) co-efficient of friction < than 0.1 ( iii ) blowing power upto 10 bar ( iv ) internal pressure creep rupture test 48 hrs at 80c as per is 4984-1995 ( v ) impact resistance test no crack or split as per is 122295 part-9 1986 ( vi ) crush resistance test as per tec spec no g / cds-01 / 01 dec 1994 and amendment no. 1 , joint closure - ( i ) dimension length 53 cm ( ii ) maximum diameter 23 cm ( iii ) maximum capacity of 24 fiber , route marker for ofc - ( i ) material should be metal disc of 5 feet long and 6 inches diameter ( ii ) coating should be of two coasts of enamelled paint of good quality and ofc marked on top , 100 pair 0.63 mm jfc - ( i ) conductor diameter 0.63 mm ( ii ) insulation resistance at 500 v should be 5000 mega ohm / km ( iii ) conductor resistance ( ohm / km ) should be 86±6 ( iv ) attenuation at 150 kv ( db / km ) shall not exceed 8.25 db / km ( v ) insulation solid ( mdpe / hdpe ) ( vi ) resistance to compression range be 200n, 12vdc ( vii ) core wrap should be polyester tape ( viii ) moisture burner be poly aluminium ( ix ) unarmoured ( x ) far end crosstalk ( db ) at 150 khz individual value be 55 db / km rms and rms should be 67.8 db / km ( xi ) near end crosstalk ( db ) at 150 khz should be better than 55 rms , 100 pair 0.5 mm jfc - ( i ) conductor diameter 0.50 mm ( ii ) insulation resistance at 500 v should be 5000 mega ohm / km ( iii ) conductor resistance ( ohm / km ) should be 86±6 ( iv ) attenuation at 150 kv ( db / km ) shall not exceed 8.25 db / km ( v ) insulation solid ( mdpe / hdpe ) ( vi ) resistance to compression range be 200n, 12vdc ( vii ) core wrap should be polyester tape ( viii ) moisture burner be poly aluminium ( ix ) unarmoured ( x ) far end crosstalk ( db ) at 150 khz individual value be 55 db / km rms and rms should be 67.8 db / km ( xi ) near end crosstalk ( db ) at 150 khz should be better than 55 rms , 50 pair 0.5 mm jfc - ( i ) conductor diameter 0.50 mm ( ii ) insulation resistance at 500 v should be 5000 mega ohm / km ( iii ) conductor resistance ( ohm / km ) should be 86±6 ( iv ) attenuation at 150 kv ( db / km ) shall not exceed 8.25 db / km ( v ) insulation solid ( mdpe / hdpe ) ( vi ) resistance to compression range be 200n, 12vdc ( vii ) core wrap should be polyester tape ( viii ) moisture burner be poly aluminium ( ix ) unarmoured ( x ) far end crosstalk ( db ) at 150 khz individual value be 55 db / km rms and rms should be 67.8 db / km ( xi ) near end crosstalk ( db ) at 150 khz should be better than 55 rms , 20 pair 0.5 mm jfc - ( i ) conductor diameter 0.50 mm ( ii ) insulation resistance at 500 v should be 5000 mega ohm / km ( iii ) conductor resistance ( ohm / km ) should be 86±6 ( iv ) attenuation at 150 kv ( db / km ) shall not exceed 8.25 db / km ( v ) insulation solid ( mdpe / hdpe ) ( vi ) resistance to compression range be 200n, 12vdc ( vii ) core wrap should be polyester tape ( viii ) moisture burner be poly aluminium ( ix ) unarmoured ( x ) far end crosstalk ( db ) at 150 khz individual value be 55 db / km rms and rms should be 67.8 db / km ( xi ) near end crosstalk ( db ) at 150 khz should be better than 55 rms , jointing kit 100 pair - ( i ) 100 pair tsf-3 ( ii ) unarmoured ( iii ) fully petroleum filled jelly , jointing kit 50 pair - ( i ) 50 pair tsf-2 ( ii ) unarmoured ( iii ) fully petroleum filled jelly , jointing kit 20 pair - ( i ) 20 pair tsf-1 ( ii ) unarmoured ( iii ) fully petroleum filled jelly , route marker for jfc - ( i ) material should be metal disc of 5 feet long and 6 inches diameter ( ii ) coating should be of two coasts of enamelled paint of good quality and jfc marked on top , gi pipe - ( i ) 40 mm thickness ( ii ) material should be carbon / steel pipe based total quantity : 1