Laser Diode Intensity Modulation and Demodulation Trainer
Product Code : JA-FOT-1542
The Laser Diode Intensity Modulation and Demodulation Trainer is a two-unit set, a laser diode transmitter and a receiver, for characterising a laser diode and building analogue, digital and free-space optical links. Students plot optical power against forward current, compare automatic current control (ACC) with automatic power control (APC), and measure loss in plastic and glass fibre patch cords (SKU JA-FOT-1542).
Specifications
The two units and accessories listed:
| Product | Laser Diode Intensity Modulation and Demodulation Trainer |
| SKU | JA-FOT-1542 |
| Transmitter unit | Laser diode transmitter module; SPDT switch for ACC or APC; power-output potentiometer; 6 V DC at 100 mA regulated supply |
| Receiver unit | Laser diode receiver module; PIN diode for measuring laser power; voltage-output potentiometer; 6 V DC at 100 mA regulated supply |
| Fibre | 2 m step-index PMMA plastic fibre patch cord; 2 m graded-index glass fibre patch cord; in-line SMA adaptor |
| Measurement aids | Numerical aperture jig; mandrel |
| Mains | 230 V ±10%, 50 Hz AC; switch, fuse and jewel light |
| Weight | 4 kg approx. |
| Dimensions | W 340 x H 110 x D 210 (as listed) |
| Also required | AF/RF generator 10 Hz to 1 MHz, three digital multimeters, 20 MHz oscilloscope |
Experiments on the laser diode trainer
The listed experiments cover:
- Optical power against forward current, and monitor photodiode current against optical power
- ACC and APC modes of operation compared
- Analogue laser link: output against input voltage and the maximum distortion-free input at set optical power
- Digital laser link: rise-time, fall-time and pulse-width distortion; propagation delay
- Loss in dB of the plastic and glass patch cords and of two cords joined by the adaptor
- Analogue and digital free-space communication; numerical aperture of PMMA fibre
Scope of supply and ordering
The listing covers the transmitter and receiver units with both fibre patch cords, the SMA adaptor, NA jig, mandrel and patch leads, supplied by JaincoLab; the generator, multimeters and oscilloscope are separate. The number of units, the packing and the dispatch time are confirmed on the quotation.
Frequently asked questions
How are the ACC and APC modes selected?
An SPDT switch on the transmitter unit selects automatic current control or automatic power control, so the two modes can be compared.
Which fibres are supplied for loss measurement?
A 2 m step-index PMMA plastic fibre patch cord and a 2 m graded-index glass fibre patch cord, with an in-line SMA adaptor to join them.
Can it be used without fibre?
Yes. The listed experiments include analogue and digital free-space laser communication.
Related products
- Advanced Fibre Optic Analogue Transceiver Trainer
- Advanced Fibre Optic Digital Transceiver Trainer
- Physics of Fiber Optics Trainer
- Fibre Optic Trainer for Numerical Aperture
Related items are grouped in the JaincoLab fibre optic trainer range.
Request a quote
For a price on the Laser Diode Intensity Modulation and Demodulation Trainer, share the quantity and destination via the contact page or email [email protected].
JaincoLab specialises in turnkey laboratory projects funded by education ministries, the World Bank and United Nations programmes, manufacturing and exporting the equipment and executing these projects successfully in many countries. Tender bidders can send their requirement list through our tenders page for a line-by-line quotation.
