Coarse WDM and Bragg Grating Module Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-13254
Indian Lab Suppliers supplies the Coarse WDM and Bragg Grating Module (Product ID: 13254) as part of its electronics engineering lab equipment range. It is a benchtop four-channel coarse WDM trainer with add-drop using a fibre Bragg grating and a three-port circulator, run stand-alone or from a PC.
Quick Answer
Four CWDM laser modules at 1510, 1530, 1550 and 1570 nm (20 nm spacing, built-in isolators) are multiplexed onto one fibre, demultiplexed to InGaAs PIN detectors and the signals recovered. A fibre Bragg grating reflecting at 1550 nm, with a three-port circulator, drops that channel and adds another in its place. Students characterise the lasers (threshold about 10 mA, 0.7 mW at 30 mA above threshold, 1.4 mW near 58 mA), the mux/demux, the circulator and the grating, then run a 4-channel link with internal or external digital modulation up to 5 MHz. PC software over USB 2.0 controls laser supply, wavelength and drive current and plots V-I curves; please confirm operating system compatibility at quotation. The lasers emit invisible infrared light: never look into a connector or fibre end.
Key Specifications
| Parameter | Detail |
|---|---|
| Lasers | 4 CWDM modules, 1510 / 1530 / 1550 / 1570 nm, 20 nm spacing, built-in isolator |
| Laser drive | Threshold 10 mA; >0.7 mW at Ith + 30 mA; 1.4 mW at about 58 mA; digital modulation to 5 MHz |
| Detectors | InGaAs PIN, 1.5 GHz, 0.9 A/W, 1250–1600 nm |
| CWDM mux / demux | 4 channels, ±6.5 nm passband at 0.5 dB, insertion loss ≤2.9 dB, isolation ≥30 dB adjacent, ≥40 dB non-adjacent |
| Circulator | 3-port, polarisation independent, 1525–1610 nm, 1→2, 2→3, isolation >40 dB, insertion loss ≤0.9 dB |
| Fibre Bragg grating | 1550 ±0.5 nm, 3 dB bandwidth 0.02–5 nm, reflectivity >90%, side-lobe suppression >15 dB |
| Control | Stand-alone or PC mode; USB 2.0 software with V-I plots and detector monitoring |
Where This Is Used
It extends the two-wavelength work of the WDM Trainer With Chromatic Dispersion (Product ID: 13238) and the Experimental Setup to Study Wavelength Division Multiplexing De-Multiplexing (Product ID: 13246). Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How many channels are multiplexed?
Four, at 1510, 1530, 1550 and 1570 nm.
How is a channel dropped?
A 1550 nm fibre Bragg grating reflects it back through the three-port circulator.
Can it run without a PC?
Yes, it works stand-alone or under PC control.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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