Silica-based, compact and variable-optical-attenuator integrated coherent receiver with stable optoelectronic coupling system | Zendy

Satoshi Tsunashima | Zendy; Fumito Nakajima | Zendy; Yusuke Nasu | Zendy; Ryoichi Kasahara | Zendy; Yasuhiko Nakanishi | Zendy; Takashi Saida | Zendy; Takashi Yamada | Zendy; Kimikazu Sano | Zendy; Toshikazu Hashimoto | Zendy; Hiroyuki Fukuyama | Zendy; Hideyuki Nosaka | Zendy; Koichi Murata | Zendy

Open Access

Silica-based, compact and variable-optical-attenuator integrated coherent receiver with stable optoelectronic coupling system

Author(s) -

Satoshi Tsunashima,

Fumito Nakajima,

Yusuke Nasu,

Ryoichi Kasahara,

Yasuhiko Nakanishi,

Takashi Saida,

Takashi Yamada,

Kimikazu Sano,

Toshikazu Hashimoto,

Hiroyuki Fukuyama,

Hideyuki Nosaka,

Koichi Murata

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.027174

Subject(s) - optics , demodulation , optical attenuator , photodiode , materials science , phase shift keying , optoelectronics , attenuator (electronics) , physics , optical fiber , bit error rate , multi mode optical fiber , computer science , attenuation , telecommunications , decoding methods , channel (broadcasting)

We demonstrate a compact and variable-optical-attenuator (VOA) integrated coherent receiver with a silica-based planar lightwave circuit (PLC). To realize the compact receiver, we integrate a VOA in a single PLC chip with polarization beam splitters and optical 90-degree hybrids, and employ a stable optoelectronic coupling system consisting of micro lens arrays and photodiode (PD) subcarriers with high-speed right-angled signal lines. We integrate a VOA and a coherent receiver in a 27x40x6 mm package, and successfully demodulate a 128-Gbit/s polarization division multiplexed (PDM) quadrature phase shift keying (QPSK) signal with a VOA-assisted wide dynamic range of more than 30 dB.

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