发明名称 |
OPTICAL REPEATER HAVING PHASE INVERSION CIRCUIT |
摘要 |
An optical repeater includes a first converter converting an optical input signal into an electrical signal, an equalizing amplifier which amplifies the electrical signal and which outputs an amplified electrical signal, and a timing extraction circuit which extracts a timing signal from the amplified electrical signal. Also the optical repeater includes a phase inversion circuit which receives the amplified electrical signal in synchronism with the timing signal and which outputs a phase-inverted signal in synchronism with the timing signal. The phase-inverted signal has a phase opposite to a phase of the amplified electrical signal. Further, the optical repeater includes a second converter having a diffused laser diode and converting the phase-inverted signal into an optical output signal, and a supervisory signal extraction circuit which extracts a supervisory signal contained in the optical input signal from the phase-inverted signal. The optical input signal includes a digital signal formed of a plurality of blocks. Each block has data composed of (2m+1) bit (where m is an integer) and one-bit parity so that each block is formed of a (2m+1)BlP code having an even parity. |
申请公布号 |
CA2027051(C) |
申请公布日期 |
1993.10.05 |
申请号 |
CA19902027051 |
申请日期 |
1990.10.05 |
申请人 |
FUJITSU LIMITED |
发明人 |
FUJIWARA, HARUO;KITAMURA, MITSUO |
分类号 |
H04B10/077;H04B10/2507;H04B10/29;H04B10/524;H04B10/54;H04L25/02 |
主分类号 |
H04B10/077 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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