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HT8500H - Advanced type Externally Modulated Optical Transmitter (CNR ≥ 53dB, SBS:13~18dBm adj.)

    Cod : HT8500H
    Ţara de origine: China
    Timp de livrare: 28 zile

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Scurtă descriere

1550nm externally modulated optical transmitter is the core equipment in the RFTV network system. RFTV is a unidirectional analogue and digital video broadcast. It adopts high efficiency modulation mode for RF carrier wave and its economy , flexibility and bandwidth validity is beyond comparison of IPTV. By adopting EPON, GEPON or P2P access mode to realize triple-play and FTTx, RFTV broadcasting network in 1550nm optical wavelength still plays an important role.

1550nm externally modulated technology for optical transmitter has no laser chirp, low dispersion distortion, and large extinction ratio, with excellent characteristic within 40~862MHz. External Modulator doesn't generate CSO distortion after reasonable bias. It can be followed by amplifier when used in large area coverage of over-long trunk and local networks. Adopting WDM, multi-wavelength optical channels can be transmitted through one fiber. 1550nm optical fiber CATV follows the current development trend of triple-play and fiber to home.

HT8500H - Advanced type Externally Modulated Optical Transmitter (CNR ≥ 53dB, SBS:13~18dBm adj.)

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  • HT8500H - rear view
  • HT8500H - front view

Detalii

Our HT8500H that accords with current international industry technique standard is a 1550nm Externally Modulated Optical Transmitter. The whole unit light source adopts narrow bandwidth ( 0.65MHz ), low noise, continuous wave DFB laser, which is propitious to reduce the influence of dispersion. The whole unit signal modulation adopts CATV special LiNbO3 external modulator and optimized control technology with independent intellectual property , so it can reach high index of back to back CNR ≥ 54dB, CTB ≤ -65dB, CSO ≤ -65dB, SBS: 13~18dBm adjustable . The whole unit is equipped with perfect RS232 communication interface, SNMP network management, 1+1 back-up power supply , hot-plug function available, chassis temperature auto-control.

HT8500H, advanced type externally modulated optical transmitter with its high index, high reliability and excellent cost performance, is applicable for main links and distribution network links in large and middle CATV station head-end.

Features:

  • High performance: Externally modulated technology, no laser chirp, low dispersion
  • distortion, high extinction ratio, with excellent characteristic within 40~862MHz.
  • 1+1 powers supply back , up hot-plug function available.
  • Narrow bandwidth (0.65MHz), lower noise, DFB continuous wave laser, is propitious to
  • reduce the influence of the dispersion.
  • The operating bandwidth is up to 47~1080MHz.
  • CNR ≥ 53dB and excellent CTB, CSO index.
  • SBS: 13~18dBm adjustable.
  • ITU standard wavelength, ±200GHz (±1.6nm) adjustable.
  • AGC/MGC mode is optional at spot. OMI can be optimized at spot.
  • Perfect RS232 communication interface.
  • Advanced SNMP network management function.
  • Casing temperature auto-control.
  • Excellent P/P ratio.

Main Applications:

  • Used in main links and distribution network links in large and middle CATV station head-end.
  • Analog digital hybrid transmission >200Km (with dispersion compensation).
  • Pure digital transmission
    • (without dispersion compensation) >400Km,
    • (with dispersion compensation) >700Km.
  • HT8500HU ITU wavelength adjustable, applicable to the value-added service of DWDM fiber optic CATV system and CFG dispersion compensation system.
  • It can be used in branch FTTH that has high system index demand. Point to Point>65Km, CSO ≤ -65dB. It can provide high qualified and reliable value-added service such as RFTV, IPTV and VOD for the secondary users. It can also avoid the limitation of CSO deterioration and transmission distance caused by laser chirp for adopting 1550nm direct modulated optical transmitter.

Informaţii adiţionale

Nume HT8500H - Advanced type Externally Modulated Optical Transmitter (CNR ≥ 53dB, SBS:13~18dBm adj.)
Cod HT8500H
Ţara de origine China
UM buc