| Devices |
Applications |
Specifications |
Photographs |
| C-Band GaAs High Power MESFET Devices |
Solid State Power Amplifiers for Satellite Communications |
Output Power:
2 - 2.5 W
Gain: 6 dB Frequency: 4 GHz
Total Gate Width: 5.04 mm
(Tested at SAC, Ahmedabad) |
|
| C-Band GaAs High Power MESFET Modules |
Solid State Power Amplifiers for Satellite Communications |
Two-Chip Module:
Output Power: 4.6 W
Gain: 9.2 dB
Operating Frequency: 3.75GHz
(Tested at SAC, Ahmedabad |
|
| 980 nm Pump Laser Diode |
Erbium Doped Fiber Amplifier in Optical Fiber Communications |
Wavelength: 980 nm  10 nm
Threshold Current, Ith: 35 mA
Output Power: 160 mW |
|
| 980 nm Pump Laser Diode Module with 14 PIN Butterfly Package |
Erbium Doped Fiber Amplifier in Optical Fiber Communications and CATV |
Drive Current:
350 mA
Output Power:
95 mW
Gain @ 1550 nm in EDFA block: 14 dBm
(Measured at CGCRI) |
|
| Front and Back Illuminated InGaAs Photodetectors |
Broadband Optical Communications |
Wavelength range:
1200-1600 nm
Breakdown Voltage: 50 V
Dark Current: 5 nA
Capacitance (1 MHz): 0.5 pF
|
|
| Large Area InGaAs/InP Photodetectors |
Optical Power Meters |
Breakdown voltage: > 20 V
Responsivity:
0.83 A/W at 1310 nm
0.99 A/W at 1550 nm
Dark Current:< 50 nA at -5 V
NEP: 70 nW
(Measured at Optiwave) |
|
| Photodetectors for WDM Tunable Filters |
DWDM Optical Networks |
Operating wavelength:
1520-1560 nm
3-db Bandwidth: 1.2 GHz
WDM operation:
1 Gbps
(Measured at TUD, Darmstadt) |
|
| WDM Tunable Filter |
WDM Optical Networks |
Operating wavelength:
1520-1560 nm
Free Spectral Range: 37 nm
FWHM: 0.25 nm
Thermal Actuation Current: 0-55 mA
Filter Losses: ~ 10 dB |
 |
| Integrated Optical Receiver Module for 155 Mbps |
Telecommunications and High Speed Optical Communications |
Operation wavelength: 1310 & 1550 nm
Sensitivity:
- 29 dBm
Dynamic Range: 23 dB
BER: 10-9
(Measured at C-DoT, Delhi) |
|
Hybrid PIN-FET/APD FET
Receiver Modules for 8-622 Mbps |
SONET/ Fiber Optic Receivers and Optical Data Communication |
Sensitivity:
- 45 dBm (at 8 Mbps)
-25 dBm (at 622 Mbps)
Dynamic Range:
23 to 25 dB
BER: 10-9 |
|
| Fiber Optic Analog CATV Receiver |
Up-stream fiber links in a community antenna television (CATV) system |
Operation wavelength:
1300-1600 nm
Gain flatness:
1 - 2 dB
Output power:
34 dBm
AGC threshold : 25x10-3 mW |
 |
| 1 x 8 Optical Power Splitter |
Passive Optical Networks in Fiber to the Home (FTTH) and Optical Communications |
Operating wavelength: 1550 nm
Underclad (SiO2): no=1.445,
Thickness =15x10-3 mm
Core (Ge-SiO2):
nc =1.449
Thickness = 8 x10-3 mm
Upperclad (BPSG): no=1.445
Thickness =12x10-3 mm
Dn, Index Difference: 0.30 %
Port to Port Spacing: 250x10-3 mm
Avg. Insertion loss : ~ 15 dB
Uniformity: 2.5 dB |
|
| 8 x 8 Arrayed Waveguide Grating Multiplexer / Demultiplexer |
DWDM Optical Networks |
Operating wavelength: 1550 nm
Underclad (SiO2): no=1.445
Thickness = 15 mm
Core(Ge-SiO2):
nc =1.455
Thickness = 6 mm
Upperclad (BPSG):
no= 1.445
Thickness = 12 mm
Dn, Index Difference: 0.75 %
Port to Port Spacing: 250x10-3 mm |
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