Optical module

Optical module

Optical module definition

The optical module is an optoelectronic device that performs photoelectric and electro-optic conversion. The transmitting end of the optical module converts the electrical signal into an optical signal, and the receiving end converts the optical signal into an electrical signal. Optical modules are classified according to the package type. Common SFP, SFP+, SFF, Gigabit Ethernet interface converters (GBIC), etc.

By function

It includes a light receiving module, an optical transmitting module, an optical transceiver module, and an optical forwarding module.

The main function of the optical transceiver integrated module is to realize photoelectric/electrical and optical conversion, including optical power control, modulation and transmission, signal detection, IV conversion, and limiting amplification and decision regeneration. In addition, anti-counterfeiting information query and TX-disable functions are common. There are: SFP, SFF, SFP+, GBIC, XFP, 1x9, etc.

In addition to the photoelectric conversion function, the optical forwarding module integrates many signal processing functions, such as MUX/DEMUX, CDR, function control, sexual energy acquisition and monitoring. Common optical forwarding modules are: 200/300pin, XENPAK, and X2/XPAK.

The optical transceiver module, the English name transceiver, referred to as the optical module or the optical fiber module, is an important device in the optical fiber communication system. [2]

By parameter

Pluggability: hot swap and non-hot swap

Package form: SFP, GBIC, XFP, Xenpak, X2, 1X9, SFF, 200/3000pin, XPAK.

Transmission rate: The transmission rate refers to the number of bits transmitted per second in units of Mb/s or Gb/s. Optical module products cover the following main rates: low speed, 100 Mbps, Gigabit, 2.5G, 4.25G, 4.9G, 6G, 8G, 10G and 40G.

By package

1. XFP (10 Gigabit Small Form Factor Pluggable) is a hot-swappable, communication protocol-independent optical transceiver for 10G bps Ethernet, SONET/SDH, Fibre Channel.

2. Small pluggable transceiver module (SFP), currently the most widely used.

3. GigacBiDi series single-fiber bidirectional optical module uses WDM technology to realize a two-way information transmission of a fiber (point-to-point transmission. Especially, the fiber resources are insufficient, and one fiber transmits two-way signals). GigacBiDi includes SFP single-fiber bidirectional (BiDi), GBIC single-fiber bidirectional (BiDi), SFP+ single-fiber bidirectional (BiDi), XFP single-fiber bidirectional (BiDi), SFF single-fiber bidirectional (BiDi) and so on.

4. RJ45 electric port small pluggable module, also known as electric module or electric port module.

5.SFF is divided into 2x5, 2x10, etc. according to its pins.

6. Gigabit Ethernet Interface Converter (GBIC) Module

7. Passive optical network PON (A-PON, G-PON, GE-PON) optical module

8.40Gbs high speed optical module.

9.SDH transmission module (OC3, OC12, OC48)

10. Storage modules, such as 4G, 8G, etc.

Optical mode editing

SFP optical module

Optional wavelength: 850nm, 1310nm, 1490nm, 1550nm, CWDM, DWDM

Rate: 0-10Gbit/s

DDM: optional

SFP RJ45 electrical port module

Interface: RJ45, COPPER

Rate: 10/100/1000M adaptive, mandatory 1000M

DDM: optional

XFP optical module

Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM

Rate: 10Gbit/s

GBIC optical module

Optional wavelength: 850nm, 1310nm, 1490nm, 1550nm, CWDM, DWDM

Rate: 1.25 Gbit/s

GBIC RJ45 electrical port module

Interface: RJ45, COPPER

Rate: 10/100/1000M adaptive, mandatory 1000M

SFP+ optical module

Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM

Rate: 10Gbit/s

X2 optical module

Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM

Rate: 10Gbit/s

XENPAK optical module

Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM

Rate: 10G

Application:

The full name of D/T in English is: datacom/telcom. Data communication mainly includes computer video, data communication and so on. Telcom mainly includes wireless voice communication.

Such products are mostly used in backbone networks in fiber optic networks.

PON: English: passive optical network: passive optical network. Such products are mainly used in access networks in optical fiber network systems. Among them, the triplex product can transmit analog signals in addition to fiber signals.

Optical modules are mainly divided into: GBIC, SFP, SFP+, XFP, SFF, CFP, etc. Optical interface types include SC and LC. But now commonly used are SFP, SFP+, XFP, not GBIC. The reason is that GBIC is bulky and easy to break. And "" SFPs that are commonly used today are small and cheap.

Type: Single mode optical module is suitable for long distance transmission; multimode optical module is suitable for short distance transmission.

Function: The optical module is used as a carrier for transmission between the switch and the device, which is more efficient and safer than the transceiver.