Optical Fiber Communication Principle Integrated Experiments Modules

Optical Fiber Communication Principle Integrated Experiments Modules

OFCP-8004B

1. Purpose :

Through practical operation, measurement and analysis on every measured point, students can learn and understand basic transmission principle, main transmission features of optical fibers, working principle, features and process of semiconductor photoelectric devices such as luminotron, laser. They can be familiar with the transmission process of analogy & digital signals in optical fiber transmission, requirements of optical fiber devices in practical applications. They can learn theories and practical skills in the same time. In one word, the experiment can let students learn basic theories on program control exchange engineering design, program control exchange equipments maintenance and management, can make students have the ability for practical application.

2. Content :

1) Optical fiber communication system signals generator unit experiment

2) Central processing unit (CPU) experiment

3) Coded mark inverse code (CMI) experiment

4) Optical fiber transmitting system experiment

5) Optical receiving system & eye view measurement experiment

6) PCM encoded optical fiber transmission experiment

7) Data optical fiber transmission system unit experiment

8) Telephone optical fiber transmission simulation system unit experiment

9) Digital Telephone optical fiber transmission system unit experiment

10) Single experiment case fulfills optical fiber communication integrated experiment

11) Double experiment cases fulfill optical fiber bi-directional transmission experiment

12) *Digital optical fiber transmitting interface indexes measurement experiment

13) *Digital optical fiber receiving interface indexes measurement experiment

14) *PCM voice channel features integrated testing experiment

15) *Optical fiber transmission features testing experiment

16) *Optical fiber passive devices features testing experiment

17) *Image optical fiber transmission system experiment

18) *Wave division multiplexing (WDM) optical fiber communication system experiment

Atten: * enhanced experiments, need other instruments, can be configured according to actual financial status.

3. Instruments Attached Optionally:

- 20MHZ dual-trace oscilloscope 1 in 1 group

- Low-frequency generator 1 in 1 group

- Frequency meter 1 in 1 group

- Function generator 1 in 1 group

(Low-frequency generator, frequency meter are not needed if have function generator)

- Multimeter (needle, 500 type for instance) 1 in 1 group

- TDS-210 Digital storage 40MHz oscilloscope 1 for 5 groups, or as needed

- Distortion meter 1 for 5 groups, or as needed

- PMS-1 optical power meter 1 for 5 groups, or as needed

Atten: except optical power meter, other instruments also can be used for 4 types of experiments cases.

4. Features:

1. Power supply: +5V, -5V, +12V, -12V

2. Each one low speed 1310 and 1550 wavelength receiver and transmitter, data speed can from DC to 5MHZ, convenient for using 20MHZ oscilloscope to observe.

3. 1 low speed wavelength optical transceiver.

4. 1 optical wave division multiplexer and demultiplexer.

5. Bit error tester, can change adjust optical power meter of optical adjustable attenuator to measure optical reception sensitivity without bit error meter.

6. Interface circuit with external bit error test.

7. Digital compressed image transfer interface circuit, can transfer computer image.

8. 2 routes of analogy phone and digital phone user interface circuit

9. 1 standard E1 interface, cable clock can be from 64KHZ - 2048KHZ programmable.

10. Digital signals generation, code conversion, synchronous clock is completed by CPLD programmable device.

11. 1B2B and 5B6B code conversion experiment

12. Compatible with 155Mbit/s SDH optical transfer device ADR155C.

5. Experiments:

(1) Basic experiments:

1. HD8634 Optical fiber open experiment circuit composition & introduction

2. Optical transceiver module

3. Electric transceiver module circuit composition and analysis

4. Single-mode optical fiber

5. Optical flexible connector

6. Optical wave division multiplexing device (OPTIC WDM)

7. Optical directional coupler (optical splitter/coupler)

8. Optical attenuator

9. CPLD programmable device signals generation and forming

10. Optical fiber transmission system

11. Optical fiber reception system

12. Data optical transfer system

13. PCM pulse code modulation technology

14. Digital phone optical transfer system

15. Digital base band signals. PN code. CMI code and code conversion

16. 5B6B code optical channel transfer

17. External digital signals optical fiber channel transfer

18. Optical fiber channel eye view observation

19. Optical receiver optical fiber channel bit error test/reception sensitivity measure

20. E1 interface/phone signals bi-directional transfer

21. Computer data communication/RS232 interface

22. TTL input interface/CMOS input interface/ECL input interface

23. Bit error tester input/output interface

24. Digital compressed image optical transfer/USB interface

25. JTAG interface/CPLD programmable devices download interface

26. PECL differential electric interface/optical transceiver integrated module

27. 1310/1550 wavelength optical transceiver module measure

28. Optical fiber transfer characteristic measure and optical division ratio test

29. Optical transmitter electric interface indexes test

30. Optical receiver electric interface indexes test

31. CPLD programmable logic device EPM 7128 development & application

32. 5B6B code encoding, optical fiber channel transfer, decoding and application.

33. 1310/1550 wavelength optical wave split multiplexing/demultiplexing experiment.

34. Optical fixed/adjustable attenuator application in optical communication.

35. Optical directional coupler (optical splitter/coupler) application in optical communication

36. Optical communication system second development & design application

37. AMI/HDB3 terminal interface experiment

38. Encoding & decoding experiment

39. Connector and optical fiber jumper wire performance measure

40. Phone exchange calling processing experiment

41. User's loop interface experiment

42. Analogy signals transfer and image transfer etc

43. Synchronous data interface experiment

(2) Engineering design experiments:

1. HD8634 optical communication experiments case and 155Mbit/s SDH optical transfer device ADR155C interface application experiment

2. 155Mbit/s SDH optical transfer device ADR155C second development project design experiment

3. HD8634 optical communication experiments case and 155Mbit/s SDH optical transfer device ADR155C engineering design application.

(Devices needed: Optical power meter, optical branching device, FC/PC optical fixed attenuator, FC/PC flange optical adjustable attenuator, SC/PC optical fiber adapter, FC/ST flange optical fiber adapter)

(3) Performance parameters:

1. Power supply interface:

Input: 185 ~ 240V external AC voltage input

Output: +5V/2.5A,-5V/0.3A,+12V/1A, -12V/1A

Power consumption : <40VA

2. PCM Digital phone encoding & decoding:

Main clock: 2048MHZ

Synchronization: 8KHZ pulse

Bit rate: 64KBBIT/S

Time sequence: reverse clock encoding & decoding

3. Image transmission interface:

Interface type: USB standard interface

4. Digital phone interface:

Interface type : Crystal Connector

User's module: BPL38710

5. Bit error test interface:

Interface type: DB9 interface or needle interface

6. Optical characteristic:

Interface type: IC1. 1=L1.1+S1.1 or IC1.1 = L1.1 + S1.2

Bit rate: 0 ~ 5Mbit/s +/_15ppm

Standard : ITU - T G.957 / G.958

Encoding: Non-return zero (NRZ)

Transmission power: -5 to 0 dbm

Max reception power: 0dbm

Reception sensitivity: -34dbm

Optical fiber mode: Single mode 1310nm(IC1.1) or 1550nm(IC1.2) accords with ITU��T G.625 suggestion. Atten: also can use multi-mode optical fiber, diameter <= 62.5 micron

Ensured attenuation : 0 ~ 28, no other attenuator is needed

Typical distance : 0 ~ 60 KM (IC1.1) or 0 ~ 90KM (IC1.2)

Interface type: full metal ST