Plan Projects – Current status S.Sureshkumar, Engineer E Fiber Optics and RFI Group

Our Team  S.Sureshkumar  Pravin Raybole  Arun Kumar  M. Gopinathan  Satish Lokande  Digambar  Amit Sawanth

Projects under Plan  Broadband analog fiber optic link – GMRT Upgrade.  Ethernet link to antennas – 1 Gbps.  Supporting existing fiber optic link with smooth upgrade.  8 x 1 GBE Long haul fiber optic link  Fiber Optic LAN for GMRT – Fiber to your work place.  RF common box with fiber connectivity – 15 meter dish.

IF / LO / Ret. Tel RF - CH1 RF – CH2 Spare LO / Forward Tel CWDM MUX 1310 / 1550 Bi- directional Mux 1550 nm1310 nm Antenna Base Central Electronics Building IF / LO / Ret. Tel RF - CH1 RF – CH2 Spare LO / Forward Tel 1310 nm1550 nm Fiber Link CWDM De- MUX Proposed new scheme

Need for New scheme  Single fiber supports Broadband fiber optic link, Existing GMRT Return Link, Existing GMRT Forward Link  Provides second fiber for Bi-directional Ethernet link to GMRT Antennas.

CWDM System – Current status  Design Completed  Installed Ch 1 – C04 and C11 antenna DWDM System – Current status  Design Completed  Installed Ch 2 – C04 and C11 antenna  Installed in Ch1 and Ch2 – W04 and E06

Conversion Gain – CWDM Vs DWDM system

Noise Figure – CWDM Vs DWDM system

Operating level – DWDM system

Operating Level – CWDM system

Ethernet link to antenna  100 Mbps link installed – C00, C12, C05  10/100/1000Mbps upgrade – 10 pairs arrived  Bi-directional single fiber link nm / 1550 nm, - 40 km distance

15 mt Dish  Design completed Swap Switch Dc – 6 GHz amplifier Dc – 2 GHz dir_coupler Rf detector Fiber optic transmitter SWAP SWITCH Gain = 17 dB RF T ermination Gain = 17 dB RF Detector Variable Attenuator RF Switch Directional Coupler FIBER OPTIC TRANSMITTER DC out – RF Monitoring Single Mode Fiber to Central Processing Location for single Polarisation UNIT 1 UNIT 2 UNIT 3 UNIT 4 UNIT 5 Control & Monitor UNIT 6  Design in progress Variable attenuator Variable attenuator Programming of C & M Programming of C & M Common box drawing Common box drawing Water proof connector Water proof connector

Dc Power supply  Fiber Optics +/- 15 V 3 Amps  Frontend +/- 20 V 10 Amps  15 mt dish ant. +/- 20 V 10 Amps

CWDM based 8 x 1 GBE Link – GMRT and NCRA Current Status: Completed Upgrade Proposed : Remote monitoring for Rajgurunagar : Optical Amplifier between NCRA - Rajgurunagar

Optical Amplifier Cost : 4 Nos. x 3200 USD

Fiber LAN – GMRT Fiber Network Rack Fiber distribution

Fiber distribution at user end

Expenses  TEC controller 10 Nos 60,890  Noise Source 10 Nos3,64,000  Media converters 1,57,200  EMI filter 25,285  PCB Roger Make 80,000  Finolex wires 7,912  10 Antenna Pigtail, Adaptor, And Attenuator 12,50,000 And Attenuator 12,50,000  Milli ohms resistor ,280  RF Connectors2,94,221  Total Expenditure22,46,788

Proposed expenses  30 Ant CWDM Broadband link Components: Lakhs Lasers( 950 USD x 120 Nos ) Lasers( 950 USD x 120 Nos ) MUX and De-MUX (Rs x 30 pairs) MUX and De-MUX (Rs x 30 pairs) TEC controllers ( 100 USD X 100 Nos ) TEC controllers ( 100 USD X 100 Nos ) Pigtails, adaptors and attenuators ( Rs X 20 ) Pigtails, adaptors and attenuators ( Rs X 20 )  Optical Amplifier ( Pune – Narayangaon Link ) 4 Nos,7.0 Lakhs  OTDR4.5 Lakhs  Splicing Machine5.5 Lakhs  Network Analyzer10 Lakhs  Optical Spectrum Analyazer / Wavelength meter12 Lakhs  Optical Laser source 1550 nm2.0 Lakhs  Optical Power meter CWDM wavelength callibrated2.0 Lakhs  Hand-held RF Spectrum Analyzer8.0 Lakhs With GPS and RFI locator. With GPS and RFI locator.  PC based RF spectrum analyzer5.0 Lakhs  Engineering Handset – Mobile0.1 Lakhs  RF Power Amplifier1.5 Lakhs  Manpower for RFI Survey1.5 Lakhs  Lap-top Computer – Ethernet link work0.5 Lakhs  Total Budget for OFC and RFI Lakhs