FIBER OPTIC COMMUNICATION BASIC
Model No: ET-B-P
Specification:
| Transmitter |
: Two Siemens fiber optics LED |
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| Transmitter 01 |
: Peak wavelength of emission 660nm red visible (SFH756V) |
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| Transmitter 02 |
: Peak wavelength of emission 950nm (SFH450V) |
| Receiver |
: Two fiber optic photo detector |
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| Receiver 01 |
: PIN photo diode with responsivity of 0.3 µA (SFH250V) |
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| Receiver 02 |
: Photo Detector with TTL Logic output (SFH551V) |
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On-Board Signals
- SineWave
- Frequency: 1Hz ~ 10KHz
- Amplitude: 0 ~ 4 Vpp
- TTL-Square Wave
| · Index-n1 |
: 1.492 |
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| · Numerical aperture |
: 0.5 |
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| · Acceptance angle |
: 60º |
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| · Fiber diameter |
: 1000 microns |
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| · Outer diameter |
: 2.2 mm |
Modulation techniques
– Direct intensity modulation
– Frequency modulation
– Pulse width modulation (PWM) (with variable clock 4 K z, 8 KHz, 16 KHz, and 32 KHz)
– Pulse position modulation (PPM) (with variable clock 4KHz, 8 KHz, 16 KHz, and 32 KHz)
| Driver Circuit |
: Analog and digital configuration for 660 nm and 950 nm LED |
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| Analog/digital bandwidth |
: 2MHz / 5MHz |
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| Filter circuit |
: 4th order Butterworth filters with 3.4 KHz cut-off frequency |
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| Voice Communication |
: Fiber optic voice link using dynamic mike and speaker |
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| PC TO PC Communication |
: PC to PC communication using 660 nm and 950 nm LED through RS-232 standard |
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| RS-232 Port type |
: Two 9 pin D type connector |
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| Baud rate |
: Maximum 115.2 kbps baud |
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| Fiber optic cable |
: Type :plastic optical cable, step index, multimode |
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Core Refractive
