Laser Diode Intensity Modulation and Demodulation Trainer Manufacturer,Supplier and Exporter in India
Product Code : EL-FOT-1542
Jlab Export is a leading Laser Diode Intensity Modulation and Demodulation Trainer Manufacturer,and suppliers in India
Laser Diode Intensity Modulation and Demodulation Trainer (code EL-FOT-1542) is a two-unit optical communication trainer, a laser diode transmitter and a laser diode receiver, for characterising a laser diode and building analogue and digital links with it — over plastic and glass optical fibre and through free space. A PIN diode in the receiver unit measures the laser diode’s power. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Laser diode characterisation | Optical power (Po) against forward current (IF); monitor photodiode current (IM) against optical power output (Po) |
| Control modes | Study and comparison of automatic current control (ACC) and automatic power control (APC) |
| Analogue intensity modulation system | Design and evaluation: Vo against Vin at specified optical carrier power levels; maximum Vin at a specified Po before Vo distorts |
| Digital transmission system | Design and evaluation: rise-time and fall-time pulse-width distortions; propagation delay |
| Fibre experiments | Loss in dB of a step-index multimode plastic fibre patch cord, of a graded-index multimode glass fibre patch cord, and of two patch cords joined by the in-line adaptor; numerical aperture of PMMA fibre cable |
| Free-space experiments | Analogue and digital laser free-space communication systems |
| Transmitter unit | Laser diode transmitter module; SPDT switch to select ACC or APC; potentiometer to set the power output; 6 V DC at 100 mA IC-regulated supply, internally connected; mains on/off switch, fuse and jewel light |
| Receiver unit | Laser diode receiver module; PIN diode for measuring the laser diode power; potentiometer to set the voltage output; 6 V DC at 100 mA IC-regulated supply, internally connected |
| Fibre and fittings | Two-metre PMMA plastic fibre patch cord (cable 1); two-metre graded-index multimode glass fibre patch cord (cable 2); in-line SMA adaptor; numerical aperture measurement jig; mandrel |
| Mains supply | 230 V ±10%, 50 Hz AC |
| Connections | Terminals and sockets for connections and waveform observation; stackable patch cords with 4 mm spring-loaded plugs, half a metre long |
| Operating instructions | Object, theory, design procedures, report suggestions and book references |
| Weight | About 4 kg |
| Dimensions | W 340 x H 110 x D 210 |
| Other apparatus required | AF/RF generator, 10 Hz to 1 MHz; three digital multimeters; cathode ray oscilloscope, 20 MHz |
| Quality check | Each trainer is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-FOT-1542 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Laser Diode Modulation Trainer Used For?
A laser diode emits very little light until its forward current passes a threshold, after which the output rises steeply, and that threshold drifts with temperature. Plotting optical power against forward current shows this behaviour, and the monitor photodiode experiment shows how a small part of the output is sensed so that the drive can be corrected. With the characteristics known, students build an analogue intensity-modulated link, find how large an input it accepts before the output distorts, and then a digital link with its pulse distortion and delay.
What to Specify When Ordering
- The number of trainer sets (one set is the transmitter unit plus the receiver unit).
- Any other fibre optic trainers to be quoted alongside it for the same lab.
- Delivery destination, preferred terms and any tender reference.
Frequently Asked Questions
What is the difference between ACC and APC mode?
In automatic current control the drive current is held constant, so the light output can drift as the laser warms up. In automatic power control the monitor photodiode signal is fed back to keep the optical output power constant. The trainer’s SPDT switch selects either mode so they can be compared.
Which fibres can be tested?
A step-index multimode PMMA plastic fibre and a graded-index multimode glass fibre, each as a two-metre patch cord, and the two joined through the in-line SMA adaptor to measure the loss of the joined pair.
What does free-space communication mean here?
The laser beam travels through the air straight from the transmitter unit to the receiver unit, with no fibre in between. The trainer covers both an analogue and a digital free-space system.
Which instruments are needed besides the trainer?
An AF/RF generator covering 10 Hz to 1 MHz, three digital multimeters and a 20 MHz cathode ray oscilloscope, all separate items. JLab lists an A.F. Oscillator Function Generator Cum Digital, a Digital Multimeter and a Cathode Ray Oscilloscope that can go on the same quotation.
What information is needed for an export quotation?
The number of sets, the destination country and port or city, delivery terms (for example FOB or CIF), any packing or labelling requirements and the tender reference if there is one.
Who manufactures this trainer?
Jain Laboratory Instruments Pvt Ltd (JLab) makes both units at its works in Ambala, Haryana, India, and quotes for them directly.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of optoelectronics, communication and other laboratory trainers in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The trainer is produced in JLab’s own works, not bought from a trader, which lets colleges, universities, dealers and importers buy it factory-direct; each set is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — France in Western Europe, Colombia in South America, Zambia in East Africa, Lesotho in Southern Africa and Japan in East Asia are a few examples. For tenders, see the JLab lab tenders page.
Other Fibre Optic Trainers
- Advanced Fibre Optic Analogue Transceiver Trainer — analogue intensity modulation with LED transmitters at two wavelengths.
- Advanced Fibre Optic Digital Transceiver Trainer — a digital fibre link with five line-coding methods.
- Fibre Optic Trainer for Numerical Aperture — numerical aperture and patch-cord loss of PMMA fibre.
- Physics of Fiber Optics Trainer — light guiding, fibre losses and analogue, digital and voice links.
The full Fiber Optic Trainers range sits within Electronics Lab Equipments.
Request a Quote
Use the Add To Cart enquiry button here, or the contact page, and tell JLab how many sets you need and where they should be delivered.
Last updated: 22 October 2026
