title: Ultra-compact coherent receiver with serial interface for pluggable transceiver.
abstract: An ultra-compact integrated coherent receiver with a volume of 1.3 cc using a quad-channel transimpedance amplifier (TIA)-IC chip with a serial peripheral interface (SPI) is demonstrated for the first time. The TIA with the SPI and photodiode (PD) bias circuits, a miniature dual polarization optical hybrid, an octal-PD and small optical coupling system enabled the realization of the compact receiver. Measured transmission performance with 32 Gbaud dual-polarization quadrature phase shift keying signal is equivalent to that of the conventional multi-source agreement-based integrated coherent receiver with dual channel TIA-ICs. By comparing the bit-error rate (BER) performance with that under continuous SPI access, we also confirmed that there is no BER degradation caused by SPI interface access. Such an ultra-compact receiver is promising for realizing a new generation of pluggable transceivers.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Itoh
authors.forename: Fumito
authors.initials: F
authors.lastname: Nakajima
authors.forename: Tetsuichiro
authors.initials: T
authors.lastname: Ohno
authors.forename: Shogo
authors.initials: S
authors.lastname: Yamanaka
authors.forename: Shunichi
authors.initials: S
authors.lastname: Soma
authors.forename: Takashi
authors.initials: T
authors.lastname: Saida
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nosaka
authors.forename: Koichi
authors.initials: K
authors.lastname: Murata
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012984:Software; D013685:Telecommunications / Q000295:instrumentation*