A HIGH-SPEED OPTICAL MODULE FOR FIBRE CHANNEL

• US 20170237490A1
• Filed: 12/19/2014
• Published: 08/17/2017
• Est. Priority Date: 10/16/2014
• Status: Active Grant

• Current Assignee: Wuhan Telecommunications Devices Company Limited (Accelink Technologies Company Limited)
• Original Assignee: Wuhan Telecommunications Devices Company Limited (Accelink Technologies Company Limited)
• Inventors: QIN, Yan, BO, Liu, YANG, Jin
• Granted Patent: US 10,050,709 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 10/25891 Transmission components H04B10/40 takes precedence
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04B 10/502 LED transmitters
• CPC Class Codes: H04L 12/40 Bus networks
• CPC Class Codes: H04L 12/40045 Details regarding the feeding of energy to the node from the bus
• CPC Class Codes: H04L 7/0075 with photonic or optical means
• CPC Class Codes: H04L 7/0079 Receiver details

Abstract

The present invention relates to the field of optical module, and provides a high-speed optical module for an optical fiber channel. The optical module can be used for 16G optical fiber channel, and comprises parts for emitting, receiving, clock data recovery and controlling. The optical module can be downward compatible with the application of 8G optical fiber channel and 4G optical fiber channel, support the diagnostic tests on optical circuit loopback and electrical circuit loopback, and provide stable receiving alarming. The optical module of the present invention, when serving as the interface between optical fiber channel systems and the interface between optical storage network storage devices, has the characteristics of miniaturization and low power consumption, and can improve port application density; the module supports hot swapping, which facilities the field debugging of the system, and can realize the replacing of the optical module without power down; and the module supports a digital diagnostic interface, and the network administrator can monitor the working state of the optical module by using the communication interface.

Claims

1. A high-speed optical module for an optical fiber channel, wherein, the high-speed optical module comprises:

a hot swappable electrical connector, for providing a data and signal transmission electrical interface between the optical module and a system board;

an emission waveshaping electrical circuit, for waveshaping an emitted electrical signal that is received, to compensate loss in a transmission medium and reset jitter budget;

a transmitter clock data recovery unit, for extracting a synchronous signal from the emitted electrical signal, performing timing determination, and removing jitter and noise, to recover a data signal;

a diode driving electrical circuit, for providing a proper bias current and a proper modulating current, to drive a vertical cavity laser emission diode;

the vertical cavity laser emission diode, for performing electrical optical conversion to the received electrical signal and outputting an optical signal;

a detector, for receiving the optical signal and completing photovoltaic conversion;

a pre-amplification electrical circuit, for preliminarily amplifying the received electrical signal;

a limiting amplification electrical circuit, for further amplifying the received electrical signal;

a receiver clock data recovery unit, for extracting a synchronous signal from the received electrical signal, performing timing determination, and removing jitter and noise, to recover a data signal;

a receiving equalizer electrical circuit, for optimizing connection performance and a dispersive parameter; and

a controlling unit, for configuring an working mode of the optical module according to a controlling command issued by a network administrator, and monitoring working state of the optical module, and reporting related data;

wherein the hot swappable electrical connector, the emission waveshaping electrical circuit, the transmitter clock data recovery unit, the diode driving electrical circuit and the vertical cavity laser emission diode are connected in sequence;

the detector, the pre-amplification electrical circuit, the limiting amplification electrical circuit, the receiver clock data recovery unit, the receiving equalizer electrical circuit and the hot swappable electrical connector are connected in sequence; and

the controlling unit is individually connected to the transmitter clock data recovery unit, the diode driving electrical circuit, the limiting amplification electrical circuit, the receiver clock data recovery unit and the hot swappable electrical connector.

2. The high-speed optical module for an optical fiber channel according to claim 1, wherein, the diode driving electrical circuit is integrated in the interior with an eye pattern shaper and an automatic power control loop.

3. The high-speed optical module for an optical fiber channel according to claim 2, wherein, the high-speed optical module further comprises:

a human eye safety electrical circuit, for continuously monitoring a light output power of the vertical cavity laser emission diode, and when it is detected that a certain unsafe condition exceeds a predefined range, turning off the emitting part.

4. The high-speed optical module for an optical fiber channel according to claim 3, wherein, the high-speed optical module further comprises:

an alarming controlling electrical circuit, comprising a signal marker and a grounded sampling resister, for obtaining a corresponding detector current mirror value from the outputted optical signal by a received signal marker, converting to voltage by using the grounded sampling resister, and inputting to the controlling unit, so that the controlling unit in real time gathers a size of the received optical signal, and when the received optical signal is less than a power threshold, outputting an alarming signal.

5. The high-speed optical module for an optical fiber channel according to claim 1, wherein, the working mode of the optical module comprises a normal receiving and emitting mode, an optical circuit loopback mode and an electrical circuit loopback mode.