1550nm CATV Optical Transmitter Directly Modulated Fiber Transmitters

Description

The 1550nm CATV Optical Transmitter delivers a cost-effective alternative to traditional external modulated transmitters while providing comparable transmission performance. Designed for HFC downstream transmission according to NGB planning and PON standards, CATV Fiber Transmitter incorporates electronically controlled dispersion compensation to overcome the dispersion challenges typically associated with directly modulated 1550nm systems.

Supporting up to a 1.2GHz bandwidth and DOCSIS 3.1 networks, the 1550nm CATV Optical Transmitter enables reliable transmission of QAM and IPQAM （Quadrature Amplitude Modulator)services through dual RF inputs with high isolation.  Optional CWDM functionality allows multi-wavelength networking, while real-time

monitoring of laser output power, bias current, and cooling current ensures stable system operation.

1550nm CATV Optical Transmitter Performance Characteristics

• 1.2GHZ band, support DOCSIS 3.1 system.
• The AGC and MGC gain control modes are optional.

• Two inputs with 50dB isolation for high quality RF insertion.
• Dual power supply; hot backup; a variety of power supply options are available, optional AC220V and DC48V.
• Laser output power, bias current and cooling current are detected in real time.
• Optional CWDM for optical signal insertion.
• Electronically controlled dispersion compensation can support a transmission distance of 50KM.
• Low-cost solution is comparable to the performance of external modulated transmitter.
• ITU standard wavelength is optional.

CATV fiber transmitter Technique Parameters