FOL-CWDM: Coarse WDM and Bragg Grating Module

The Bench-Top Integrated CWDM System consist of all the Optical Devices and Components integrated in sturdy Aluminum Casing.

DFB LASERS – 4 No’s

1.25Gbps CWDM Laser Diode Modules at wavelengths of 1510nm,1530nm,1550nm,1570nm
In built Isolator
Channelspacing      : 20 nm
Modulation               : Digital modulation withmaximum external modulation frequency 5MHz    
Internal Modulation frequencies – 100Hz, 200Hz, 500Hz, 1KHz.
Output optical power: 1mW.

Detectors – 4 No’s

1.5GHz InGaAs PIN Photo diode Module
Spectral Range     :1250nm to 1600nm
Responsivity         : Typical 0.9 A/W in 9/125 µm Fiber.

CWDM multiplexer and de-multiplexer (4 channels)

Center Wavelength  1510nm,1530nm,1550nm,1570nm
Channelspacing       : 20nm
Max Optical Power      : 300 mW

Three Port Circulator          

Polarization Independent Optical  Circulator
Band  : C+L

Fiber Bragg Grating : Central Wavelength:  1550 ± 0.5nm

Software

User friendly GUI for monitoring, controlling of CWDM system
Operating modes like CW mode, VI characteristics mode, Internal & External Modulation
LASER control like Supply ON/OFF, wavelength selection and driving current
Real time signal level monitoring of Photo-detector.
Graphical representation :  XY plot of VI characteristics and Internal Modulation

Component characteristics

Diode laser characterization
MUX& DEMUX characterization
Optical circulator characterization
Bragg Grating characterization

Optical communication system

Four Channel CWDM by internal & external modulation
Add/Drop using Circulator & Bragg Grating